Annals of Science最新文献

Early in the 20th century Bateson, Doncaster and Punnett formed a cooperative collective to share research findings on the chromosome theory of heredity (CTH). They cross-bred plants and animals to correlate behaviour of chromosomes and heredity of individual traits. Doncaster was the most enthusiastic proponent of the new theory and worked for years to convince Bateson and Punnett on its relevance to their own research. The two younger biologists collaborated with Bateson, the preeminent geneticist in England. As their own reputations developed, their research findings allied with the consensus on the importance of the CTH by the broader scientific community. After Doncaster's tragic death in 1920, major objections to the theory had been resolved; Bateson and Punnett then utilized the CTH to construct chromosome maps detailing locations of specific genes on particular chromosomes in several different species. The marriage of heredity and cytology enhanced confidence that the theory was an accurate mechanism to explain inheritance in both plants and animals.

The use of computers and the role of women in radio astronomy and X-ray crystallography research at the Cavendish Laboratory between 1949 and 1975 have been investigated. We recorded examples of when computers were used, what they were used for and who used them from hundreds of papers published during these years. The use of the EDSAC, EDSAC 2 and TITAN computers was found to increase considerably over this time-scale and they were used for a diverse range of applications. The majority of references to computer operators and programmers referred to women, 57% for astronomy and 62% for crystallography, in contrast to a very small proportion, 4% and 13% respectively, of female authors of papers.

This paper focuses on the scholastic approach to the intensity of complexions and presents some evidence as to how the meaning of complexio evolved in fourteenth-century Italian medicine: namely, how it was conceptualized, visualized, and finally quantified. In the first part, I summarize the philosophical development of complexio, pointing out how the concept differs from simple mixtures, thereby allowing for the mathematisation of compounds and their intensity. I then move on to consider the links between medicine and mathematics and present the schemes provided by Gentile Gentili da Foligno (1280/90 - 1348) as a case study, analysing their philosophical premises and implications for medical treatment more generally. In the final part, I argue that, quite aside from representing early forms of the mathematisation of qualities, schemata and diagrams also captured the medieval ideal of the cosmos, a hierarchical progression of forms ordered in ascending degrees of perfection and nobility.

In an unpublished anatomical treatise written around 1670, the English anatomist and fellow of the Royal Society of London Edmund King proposed that the human body was ultimately an assemblage of tubes and contained liquids. Without literally seeing every of its constituents to be tubular, how did King come to posit a tubular body? This article tackles the question by examining King's inquiry about the pulse against his framing of the circulatory system into a universally tubular model. Asking how King registered this model despite the limited visibility of vascularity in practice, I discuss the place of analogy in his anatomical observation. I argue that analogy constituted an essential strategy for extending what King had perceived to account for the hardly perceptible nuances of the human body. I concentrate on two of his analogies, in which the artery was compared to the cord and the ureter. These two analogies revealed remarkable epistemic potency in representing and reasoning the pulse as the inherent motion of the living artery. They suggest that in seventeenth-century observation accounts, analogy was not simply a rhetoric suspicious of violating the principle of scientific empiricism; rather, they opened up ways of seeing and imagining nature.

At some point between 1684 and 1698 a Dartmouth tradesman started to perform experiments with the power of steam in his workshop. In the course of this investigation Thomas Newcomen discovered how to cause a partial vacuum by rapid condensation under a piston and incorporated this prime mover within an engine that was consistently reliable and proved commercially viable for draining mines.Consensus is that his initial apparatus was partly derived from an air pump, however historians have debated how this isolated ironmonger could have garnered sufficient theoretical understanding to pursue such a line of enquiry, let alone the know-how to make suitable devices and mechanisms. Just how remote was Newcomen from London 'science'?This paper examines his relational connections, identifying potential links with Denis Papin, Robert Hooke and an authority on mine pumps, Christopher Kirkby. The case of Newcomen illustrates the proliferation of modern ideas and values through relational networks, and, most importantly, the know-how to innovate.