512 EXPERIMENT STATION RECORD. 



TIk' author studieil the conditidii,^ umlcr wliicli tliis ilisseasti ocfuri'cd fm- the pur- 

 pose of lU'terminiiig if possible the im-ans of infection. Some ob8ervati(jns were made 

 on a disease of cattle known by a nuni])er of different names, but usually by the 

 term veld sickness. Experiments were nuule to determine the relation Vjetween 

 lu)rse sickness and veld sickness. Cuttle were inoculated with the blood of horses 

 affected with horse sickness, and as a result of tliese exj^eriments it was found that 

 cattle are somewhat susceptil)le to liorse si(;kness. Tiic <lisease i)roduced in cattle by 

 inoculation was indistinguishable from the form u liich o(-curs spontaneously among 

 cattle. Detailed notes are given on the i)athological anatomy of this (hsease. 



The author succeeded also in transmitting heartwater from goats to cattle and 

 horse sickness from horses to goats. The author concludes as a result of these studies 

 that the contagion which causes horse sickness is resiionsi]>le under certain conditions 

 for the infection of various other species of domestic animals in South Africa. 



Bovine tuberculosis and other animal diseases affecting' the public health, 

 1). E. Salmon ( V. S. Dept. Agr., Bureau of Animal Industry Bpt. 1902, pp. 332^353). — 

 This paper was read at the American Public Health Association at New Orleans, and 

 deals w'ith the inter-relationship between human and bovine tuberculosis. The lit- 

 erature of the subject is critically reviewed, and the conclusions are reached that 

 great differences of virulence are observed in tubercle bacilli obtained from different 

 human patients, and that some of these bacilli may be virulent for cattle and others 

 not. 



The author believes that tuberctilosis may be transmitted from animals to man or 

 from man to animals. An account is also presented of rai)ies, glanders, and anthrax, 

 with special reference to the methods of control of these diseases and the prevention 

 of the infection of man. 



A discussion of the tuberculosis question, ]\I. Sciiottelius {Beitr. Path. Aiuit. 

 u. Allg. Path., 33 {1903), No. 1-2, pp. 32-50). — A critical review of the recent contro- 

 versy concerning the problem of the unity or duality of tuberculosis. The au'.hor 

 outlines the positions of various authors on the subject. A number of experiments 

 were made in testing the possibility of transmitting tuberculosis from man to animals. 

 In these experiments 3 cows and 2 calves were used, the cows l.)eing 2 years old and 

 the calves 4 to 5 weeks old at the beginning of the experiments. Each animal 

 received from 50 to 60 gm. of human sputum in the milk or upon green fodder. 



No alteration of temperature was observed in any of the animals during the course 

 of the experiments. After a period of 4 months the 3 animals which had received 

 virulent sputum were killed and examined. In all cases infection had taken place 

 and was apparent in the various abdominal organs; the origin of the infection 

 appeared to have been in all cases the lymphatic glands in the region of the pharynx. 

 Positive results were obtained from the exannnation of diseased glands for the pres- 

 ence of tul^ercle bacilli. 



The author believes that the sputum of tuljerculous human patients is one of the 

 important sources of tuberculosis in cattle. 



The tuberculin test of cattle in Great Britain, D. E. Salmon ( U. S. Dipt. Agr., 

 Bureau of Animal Bidustrtj Bpt. 1902, pp. 550-553).— Before March 1, 1900, cattle 

 shipped to this country from Great Britain were inspected after arrival in the United 

 States. Since disease frequently developed on shijjboard in animals which did not 

 appear to be affected at the time of shipment, great losses were suffered by cattle 

 dealers. 



In order to avoid inflicting these losses upon the individuals concerned, arrange- 

 ments were made for the application of the tuberculin test in Great Britain to cattle 

 about to be shipped to this country. The test is applied to all cattle over 6 months 

 old, and has been made in Great Britain for the past 2 years. The inspector of the 

 Canadian government and the inspector of the United States have made arrange- 

 ments l)y which each government accepts certiflcates of the other's inspector. 



