Pub Date : 2020-01-01DOI: 10.14351/0831-4985-34.1.101
G. G. Beiner
Will printed labels survive prolonged immersion in collection fluids, and, if so, which printing system is preferable: inkjet, laser, or thermal transfer printing? In a world with a wide variety of printers, printing substrates, and printer technologies, the interactions between them very likely affect long-term label preservation in the chemical environment of the preservation fluid. In fluid-preserved collections, the main issues frequently encountered with labels include delamination, abrasion, fading, and disintegration during immersion in solutions such as ethanol and formaldehyde aqueous solution (widely known under the commercial name formalin). Very few publications have presented testing procedures assessing the behavior and stability of printed matter immersed in the types of solvents used in fluid-based collections. This article presents a series of experiments set up at the National Natural History Collections at the Hebrew University of Jerusalem to test a variety of museum labels. The tests compared labels actually used in different natural history collections and included labels from both thermal transfer and inkjet printers. All were subjected to accelerated aging and mechanical abrasion. In our series of tests, inkjet labels gave the best performance.
{"title":"Labels for Eternity: Testing Printed Labels for use in Wet Collections","authors":"G. G. Beiner","doi":"10.14351/0831-4985-34.1.101","DOIUrl":"https://doi.org/10.14351/0831-4985-34.1.101","url":null,"abstract":"\u0000 Will printed labels survive prolonged immersion in collection fluids, and, if so, which printing system is preferable: inkjet, laser, or thermal transfer printing? In a world with a wide variety of printers, printing substrates, and printer technologies, the interactions between them very likely affect long-term label preservation in the chemical environment of the preservation fluid. In fluid-preserved collections, the main issues frequently encountered with labels include delamination, abrasion, fading, and disintegration during immersion in solutions such as ethanol and formaldehyde aqueous solution (widely known under the commercial name formalin). Very few publications have presented testing procedures assessing the behavior and stability of printed matter immersed in the types of solvents used in fluid-based collections. This article presents a series of experiments set up at the National Natural History Collections at the Hebrew University of Jerusalem to test a variety of museum labels. The tests compared labels actually used in different natural history collections and included labels from both thermal transfer and inkjet printers. All were subjected to accelerated aging and mechanical abrasion. In our series of tests, inkjet labels gave the best performance.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88695318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-01DOI: 10.14351/0831-4985-33.1.55
A. E. Cohen, D. Hendrickson, Melissa Casarez
A taxonomic and alphabetic arrangement (TAA) of objects on shelves has prevailed in fluid-preserved natural history collections while they were managed by scientists for their own research. Now most collections are databased and internet-accessible to facilitate very different forms of research accomplished remotely by researchers who require less physical access to specimens. The collections staff who make those data available struggle to manage collection growth with limited space and budgets, while demands on them are increasing, necessitating task and space-efficient collection management solutions. We describe an alternative arrangement of objects based on their size and catalog number (OCA) that capitalizes on modern databases. Our partial implementation of this system facilitated pragmatic between-system comparisons of space use and staff time required for routine tasks. Our OCA allows 17% more jars to be stored in a given space than a TAA (not counting spaces left for growth), but adjusting vertical spacing of shelves could increase that to 115%. Ten of 15 staff tasks were more efficiently accomplished in the OCA section of the collection, and we propose ways to improve efficiency for three of the four tasks for which the TAA outperformed the OCA.
{"title":"An Alternative Shelving Arrangement for Natural History Collection Objects to Optimize Space and Task Efficiency","authors":"A. E. Cohen, D. Hendrickson, Melissa Casarez","doi":"10.14351/0831-4985-33.1.55","DOIUrl":"https://doi.org/10.14351/0831-4985-33.1.55","url":null,"abstract":"\u0000 A taxonomic and alphabetic arrangement (TAA) of objects on shelves has prevailed in fluid-preserved natural history collections while they were managed by scientists for their own research. Now most collections are databased and internet-accessible to facilitate very different forms of research accomplished remotely by researchers who require less physical access to specimens. The collections staff who make those data available struggle to manage collection growth with limited space and budgets, while demands on them are increasing, necessitating task and space-efficient collection management solutions. We describe an alternative arrangement of objects based on their size and catalog number (OCA) that capitalizes on modern databases. Our partial implementation of this system facilitated pragmatic between-system comparisons of space use and staff time required for routine tasks. Our OCA allows 17% more jars to be stored in a given space than a TAA (not counting spaces left for growth), but adjusting vertical spacing of shelves could increase that to 115%. Ten of 15 staff tasks were more efficiently accomplished in the OCA section of the collection, and we propose ways to improve efficiency for three of the four tasks for which the TAA outperformed the OCA.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85991619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-01DOI: 10.14351/0831-4985-33.1.7
X. Mengual, France Gimnich, Hannah Petersen, J. Astrin
We examined the effects of different types of specimen labels and tags on pH of different concentrations of ethanol typically used for fluid preservation in natural history collections. Labels were immersed in three different concentrations of ethanol, 96% pure undenatured ethanol (EtOH), 96% EtOH denatured with methyl-ethyl ketone (MEK), and 99.8% pure undenatured EtOH, with or without the presence of insect specimens, and the solutions were evaluated after 26 months for changes over time in pH reading. In general, pH readings of all label trials with 96% and 99.8% ethanol increased over time, except for trials of denatured alcohol, which demonstrated lower pH readings in almost all treatments, regardless of label type. Samples that contained labels with ordinary, nonstandardized, not explicitly acid-free printing paper had higher pH readings compared after the trial. Our observations are a good starting point for further experiments to answer research questions related to chemical interactions with labels in ethanol-preserved specimens, including tissue samples for molecular analyses, which can guide collection staff in their daily work.
{"title":"Natural History Wet Collections: Observations on PH Readings from the Use of Different Ethanol and Label Types","authors":"X. Mengual, France Gimnich, Hannah Petersen, J. Astrin","doi":"10.14351/0831-4985-33.1.7","DOIUrl":"https://doi.org/10.14351/0831-4985-33.1.7","url":null,"abstract":"\u0000 We examined the effects of different types of specimen labels and tags on pH of different concentrations of ethanol typically used for fluid preservation in natural history collections. Labels were immersed in three different concentrations of ethanol, 96% pure undenatured ethanol (EtOH), 96% EtOH denatured with methyl-ethyl ketone (MEK), and 99.8% pure undenatured EtOH, with or without the presence of insect specimens, and the solutions were evaluated after 26 months for changes over time in pH reading. In general, pH readings of all label trials with 96% and 99.8% ethanol increased over time, except for trials of denatured alcohol, which demonstrated lower pH readings in almost all treatments, regardless of label type. Samples that contained labels with ordinary, nonstandardized, not explicitly acid-free printing paper had higher pH readings compared after the trial. Our observations are a good starting point for further experiments to answer research questions related to chemical interactions with labels in ethanol-preserved specimens, including tissue samples for molecular analyses, which can guide collection staff in their daily work.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81616631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-01DOI: 10.14351/COFO-33-01-01.1
N. S. V. Louzada, Carlos Rodrigues de Moraes Neto, M. Nogueira, L. Pessôa
The anatomy of appendicular bones has been demonstrated to be informative for taxonomic, paleontological, and functional studies of bats. Its use in such studies, however, is limited by the small number of skeletons available for this taxonomic group in scientific collections. Here we describe a protocol for the extraction of the femur from fluid-preserved bats. This protocol was successfully tested on a large sample, including 58 species in 43 genera and 9 families (a total of 183 specimens), and is minimally invasive, requiring only two incisions in the leg at disarticulation points (knee and coxofemoral joints). This method provides material for appendicular anatomical research with minimal damage to external morphology.
{"title":"Protocol of Femur Extraction from Bats in Fluid-Preserved Collections","authors":"N. S. V. Louzada, Carlos Rodrigues de Moraes Neto, M. Nogueira, L. Pessôa","doi":"10.14351/COFO-33-01-01.1","DOIUrl":"https://doi.org/10.14351/COFO-33-01-01.1","url":null,"abstract":"The anatomy of appendicular bones has been demonstrated to be informative for taxonomic, paleontological, and functional studies of bats. Its use in such studies, however, is limited by the small number of skeletons available for this taxonomic group in scientific collections. Here we describe a protocol for the extraction of the femur from fluid-preserved bats. This protocol was successfully tested on a large sample, including 58 species in 43 genera and 9 families (a total of 183 specimens), and is minimally invasive, requiring only two incisions in the leg at disarticulation points (knee and coxofemoral joints). This method provides material for appendicular anatomical research with minimal damage to external morphology.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84838485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-01DOI: 10.14351/0831-4985-33.1.36
Steffen Bock, C. Quaisser
In the mammal collection of the Museum für Naturkunde Berlin (MfN), Germany a serious but inconspicuous deterioration of mammal skins and hides has been detected. The tear strength has been decreasing until the skins are falling apart, risking permanent loss of valuable specimens. At the MfN, about 80% of the 30,000 skins are affected. Although this phenomenon has been known by taxidermists for some time, there are very few publications on the subject. In this study, we surveyed the literature and conducted interviews with collections and leather industry professionals to understand the extent and potential causes of skin deterioration. In addition, analyses of skins in the collections of the MfN and the ZFMK (Bonn, Germany) showed that more than 80% of the tested skins had a very low tear strength. The tear strength appears correlated with the pH value and age of the skin. Our findings suggest that surplus acid from residual fat, preservation methods, or external sources such as air pollution might be a primary source of the degradation. Future steps should include further research on the chemical processes involved in deterioration, treatment options for threatened skins, and development of best practices, protocols for documentation, and development of a publicly available online knowledge base for museum skin preparation, preservation, and storage methods.
{"title":"Tear and Crumble: Deterioration Processes in Skins and Hides in Mammal Collections","authors":"Steffen Bock, C. Quaisser","doi":"10.14351/0831-4985-33.1.36","DOIUrl":"https://doi.org/10.14351/0831-4985-33.1.36","url":null,"abstract":"\u0000 In the mammal collection of the Museum für Naturkunde Berlin (MfN), Germany a serious but inconspicuous deterioration of mammal skins and hides has been detected. The tear strength has been decreasing until the skins are falling apart, risking permanent loss of valuable specimens. At the MfN, about 80% of the 30,000 skins are affected. Although this phenomenon has been known by taxidermists for some time, there are very few publications on the subject. In this study, we surveyed the literature and conducted interviews with collections and leather industry professionals to understand the extent and potential causes of skin deterioration. In addition, analyses of skins in the collections of the MfN and the ZFMK (Bonn, Germany) showed that more than 80% of the tested skins had a very low tear strength. The tear strength appears correlated with the pH value and age of the skin. Our findings suggest that surplus acid from residual fat, preservation methods, or external sources such as air pollution might be a primary source of the degradation. Future steps should include further research on the chemical processes involved in deterioration, treatment options for threatened skins, and development of best practices, protocols for documentation, and development of a publicly available online knowledge base for museum skin preparation, preservation, and storage methods.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77920010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-01DOI: 10.14351/0831-4985-33.1.18
L. Allington-Jones, K. Miles, L. Petrera, Anna Fenlon
Oxidation of pyritic fossils and iron sulfide-bearing minerals is a common problem in natural history collections, and several solutions have been developed to treat and restore these specimens to reduce continued deterioration. Labels associated with these specimens are often also severely damaged by the sulfuric acid and iron sulfate products of pyrite oxidation. This article documents trials undertaken on labels that have been contaminated with these deterioration products to a high extent and are therefore extremely fragile. It recommends a potential salvage method, even for labels that are seemingly impossible to lift out of storage trays. This project exemplifies how techniques developed across different conservation disciplines can benefit natural history collections.
{"title":"Burn Notice: A Practical Solution for Labels Damaged by Pyritic Specimens","authors":"L. Allington-Jones, K. Miles, L. Petrera, Anna Fenlon","doi":"10.14351/0831-4985-33.1.18","DOIUrl":"https://doi.org/10.14351/0831-4985-33.1.18","url":null,"abstract":"\u0000 Oxidation of pyritic fossils and iron sulfide-bearing minerals is a common problem in natural history collections, and several solutions have been developed to treat and restore these specimens to reduce continued deterioration. Labels associated with these specimens are often also severely damaged by the sulfuric acid and iron sulfate products of pyrite oxidation. This article documents trials undertaken on labels that have been contaminated with these deterioration products to a high extent and are therefore extremely fragile. It recommends a potential salvage method, even for labels that are seemingly impossible to lift out of storage trays. This project exemplifies how techniques developed across different conservation disciplines can benefit natural history collections.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90626765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.14351/0831-4985-32.1.14
Chelsea N. Miller, Holly Brabazon, Ian M. Ware, Nathaniel H. Kingsley, Jessica M. Budke
The University of Tennessee Herbarium (TENN) presents a case study for modernizing an historic seed collection. TENN staff recently rediscovered the J. K. Underwood Seed Collection (ca. 1931–1964), containing over 700 unique specimens, hidden away in storage. We employed a series of curation actions to modernize the collection and render it useful to researchers. This included physically organizing and digitally indexing the collection, updating scientific names to current taxonomy, storing the specimens in modern archival-quality containers, housing the collection in environmentally-controlled conditions, and increasing accessibility of the collection by photographing specimens and integrating these images into our existing website (tenn.bio.utk.edu). Our efforts also included developing a protocol for adding new accessions to the collection and advertising the utility of the collection as a source of morphological data on seeds for identification, research, and teaching. We also review modern strategies for curating seed collections. Specifically, we emphasize the importance of increasing visibility of collections through visual, digital representations. This expands the utility of collections and fosters global information sharing across disciplines. We present our curation project as a case study that can serve as a model for curating historic seed collections.
{"title":"Bringing an Historic Collection into the Modern Era: Curating the J. K. Underwood Seed Collection at the University of Tennessee Herbarium (TENN)","authors":"Chelsea N. Miller, Holly Brabazon, Ian M. Ware, Nathaniel H. Kingsley, Jessica M. Budke","doi":"10.14351/0831-4985-32.1.14","DOIUrl":"https://doi.org/10.14351/0831-4985-32.1.14","url":null,"abstract":"\u0000 The University of Tennessee Herbarium (TENN) presents a case study for modernizing an historic seed collection. TENN staff recently rediscovered the J. K. Underwood Seed Collection (ca. 1931–1964), containing over 700 unique specimens, hidden away in storage. We employed a series of curation actions to modernize the collection and render it useful to researchers. This included physically organizing and digitally indexing the collection, updating scientific names to current taxonomy, storing the specimens in modern archival-quality containers, housing the collection in environmentally-controlled conditions, and increasing accessibility of the collection by photographing specimens and integrating these images into our existing website (tenn.bio.utk.edu). Our efforts also included developing a protocol for adding new accessions to the collection and advertising the utility of the collection as a source of morphological data on seeds for identification, research, and teaching. We also review modern strategies for curating seed collections. Specifically, we emphasize the importance of increasing visibility of collections through visual, digital representations. This expands the utility of collections and fosters global information sharing across disciplines. We present our curation project as a case study that can serve as a model for curating historic seed collections.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90598672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.14351/0831-4985-32.1.31
Diana Tirlea, Carmen Li, A. B. Beaudoin, Emily Moffat
Museums use gelatin capsules to store small objects and specimens, despite limited documentation of their long-term viability. The Royal Alberta Museum (RAM of Canada) uses gelatin capsules to store seeds, bones, and plant material because of their ease of use, transparency, soft-bodied walls, size availability, and low cost. Recently, RAM staff reported damaged capsules from the palaeontology collections. We evaluated 499 capsules used to store specimens accessioned in 1986 and 1988 and investigated capsule properties using Fourier transform infrared spectroscopy and Oddy testing. Only 4.21% of inspected capsules were dented, cracked, and/or fractured. Based on interviews and testing, we determined that damage to capsules likely resulted during handling (i.e., applied force when opening). We conclude that gelatin capsules offer a good, inexpensive method for long-term storage of small, dried specimens in environmentally controlled conditions. Alternatives to gelatin capsules exist, although their pros and cons require evaluation before use. All storage methods require continuous monitoring for signs of container or specimen deterioration.
博物馆使用明胶胶囊来储存小物品和标本，尽管它们的长期生存能力有限。加拿大皇家阿尔伯塔博物馆(RAM of Canada)使用明胶胶囊来储存种子、骨骼和植物材料，因为它们易于使用、透明、柔软的墙壁、尺寸可用性和低成本。最近，RAM的工作人员报告了古生物学藏品中受损的胶囊。我们对1986年和1988年加入的499个用于保存标本的胶囊进行了评价，并利用傅里叶变换红外光谱和Oddy测试研究了胶囊的性质。只有4.21%的被检胶囊凹陷、开裂和/或断裂。根据采访和测试，我们确定胶囊的损坏可能是在处理过程中造成的(即在打开时施加的力)。我们得出的结论是，明胶胶囊提供了一个良好的，廉价的方法，长期储存小，干燥的标本在环境控制的条件下。明胶胶囊的替代品是存在的，尽管它们的优缺点需要在使用前进行评估。所有的储存方法都需要持续监测容器或标本变质的迹象。
{"title":"Long-Term Storage of Small Natural History Specimens Using Gelatin Capsules: A Case Study from the Royal Alberta Museum","authors":"Diana Tirlea, Carmen Li, A. B. Beaudoin, Emily Moffat","doi":"10.14351/0831-4985-32.1.31","DOIUrl":"https://doi.org/10.14351/0831-4985-32.1.31","url":null,"abstract":"\u0000 Museums use gelatin capsules to store small objects and specimens, despite limited documentation of their long-term viability. The Royal Alberta Museum (RAM of Canada) uses gelatin capsules to store seeds, bones, and plant material because of their ease of use, transparency, soft-bodied walls, size availability, and low cost. Recently, RAM staff reported damaged capsules from the palaeontology collections. We evaluated 499 capsules used to store specimens accessioned in 1986 and 1988 and investigated capsule properties using Fourier transform infrared spectroscopy and Oddy testing. Only 4.21% of inspected capsules were dented, cracked, and/or fractured. Based on interviews and testing, we determined that damage to capsules likely resulted during handling (i.e., applied force when opening). We conclude that gelatin capsules offer a good, inexpensive method for long-term storage of small, dried specimens in environmentally controlled conditions. Alternatives to gelatin capsules exist, although their pros and cons require evaluation before use. All storage methods require continuous monitoring for signs of container or specimen deterioration.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74669877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.14351/0831-4985-32.1.1
Christina I. Barrón-Ortiz, Matthew R. Sawchuk, Carmen Li, C. Jass
Water-saturated vertebrate remains (e.g., bone, antler, and ivory) are particularly challenging to stabilize for long-term storage, research, and analysis. These types of specimens are sensitive to damage caused by water loss, which frequently results in delamination, twisting, and cracking. The recovery of late Quaternary vertebrate remains from underwater areas of Cold Lake, western Canada, prompted us to conduct a series of analyses to better understand the preservation of the remains and their susceptibility to damage, and to test different conservation techniques to achieve successful drying. X-ray fluorescence analysis of a sample of specimens revealed that the remains have particularly high iron concentrations, a condition that might have contributed to weaken their structure, further compromising their integrity when drying. Additionally, we found that certain bone elements, such as long bones, are more susceptible to severe surface delamination than others, and as a result these specimens should be monitored more closely during their treatment. Of the four drying methods we tested, controlled air-drying produced the best results, followed by solvent-drying. In contrast, vacuum freeze-drying and vacuum freeze-drying with 20% v/v Acrysol WS-24 in water, an acrylic dispersion, while rapid, resulted in differing degrees of delamination and cracking.
{"title":"Conservation of Subfossil Bones from a Lacustrine Setting: Uncontrolled and Controlled Drying of Late Quaternary Vertebrate Remains from Cold Lake, Western Canada","authors":"Christina I. Barrón-Ortiz, Matthew R. Sawchuk, Carmen Li, C. Jass","doi":"10.14351/0831-4985-32.1.1","DOIUrl":"https://doi.org/10.14351/0831-4985-32.1.1","url":null,"abstract":"\u0000 Water-saturated vertebrate remains (e.g., bone, antler, and ivory) are particularly challenging to stabilize for long-term storage, research, and analysis. These types of specimens are sensitive to damage caused by water loss, which frequently results in delamination, twisting, and cracking. The recovery of late Quaternary vertebrate remains from underwater areas of Cold Lake, western Canada, prompted us to conduct a series of analyses to better understand the preservation of the remains and their susceptibility to damage, and to test different conservation techniques to achieve successful drying. X-ray fluorescence analysis of a sample of specimens revealed that the remains have particularly high iron concentrations, a condition that might have contributed to weaken their structure, further compromising their integrity when drying. Additionally, we found that certain bone elements, such as long bones, are more susceptible to severe surface delamination than others, and as a result these specimens should be monitored more closely during their treatment. Of the four drying methods we tested, controlled air-drying produced the best results, followed by solvent-drying. In contrast, vacuum freeze-drying and vacuum freeze-drying with 20% v/v Acrysol WS-24 in water, an acrylic dispersion, while rapid, resulted in differing degrees of delamination and cracking.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87339787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.14351/0831-4985-32.1.47
Marta Pérez Azcárate, Bernat Font Rosselló, Eulàlia Garcia Franquesa
In 2009, the Museu de Ciències Naturals de Barcelona launched a new permanent exhibit that included removal and restoration of a landmark piece, a fin whale skeleton, and complete redesign of its assembly structure. In this paper we present the process and results of documenting the piece before the dismantling procedure. A graphic record was created as part of the restoration process, which secondarily served as an important source of information for designing the new mounting system. A detailed visual examination of the skeleton revealed problems in the preservation of the bone. The results of the preparatory examinations proved useful for planning a new preventive conservation program for the piece in its new location.
2009年，巴塞罗那自然城市博物馆(Museu de cinncies Naturals de Barcelona)推出了一项新的永久性展览，其中包括拆除和修复一件具有里程碑意义的作品——长须鲸骨架，并对其组装结构进行了彻底的重新设计。在本文中，我们介绍了在拆除程序之前记录碎片的过程和结果。作为修复过程的一部分，创建了图形记录，这是设计新安装系统的重要信息来源。对骨骼的详细目视检查揭示了骨骼保存方面的问题。预备检查的结果被证明对在新地点规划新的预防性保护计划是有用的。
{"title":"Documenting a Historic Mounted Fin Whale Skeleton in Preparation for a Move—A Case Study at the Museu de Ciencies Naturals de Barcelona","authors":"Marta Pérez Azcárate, Bernat Font Rosselló, Eulàlia Garcia Franquesa","doi":"10.14351/0831-4985-32.1.47","DOIUrl":"https://doi.org/10.14351/0831-4985-32.1.47","url":null,"abstract":"\u0000 In 2009, the Museu de Ciències Naturals de Barcelona launched a new permanent exhibit that included removal and restoration of a landmark piece, a fin whale skeleton, and complete redesign of its assembly structure. In this paper we present the process and results of documenting the piece before the dismantling procedure. A graphic record was created as part of the restoration process, which secondarily served as an important source of information for designing the new mounting system. A detailed visual examination of the skeleton revealed problems in the preservation of the bone. The results of the preparatory examinations proved useful for planning a new preventive conservation program for the piece in its new location.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89265931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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