PSYCHOPATHOLOGY

per cent. of other psychotics. Blood culture for tubercle bacilli using the methods of Loewenstein and of Ninni and Bretey was carried out with 31 schizophrenics. In all cases the result was negative. The efficacy of the method used was proved by the positive results obtained with it in 30 5 per cent. of cases of known tuberculous infection in animals. The inoculation of 29 blood, 27 cerebrospinal fluid and two brain samples from schizophrenics into guineapigs, which were subscquently treated with an acetone extract of tubercle bacilli, gave negative results. These results indicate that there is no aetiological connection between schizophrenia and tuberculosis.