1040 EXPERIMENT STATION RECORD. 



and the Coles County Agricultural Association has offered premiums aggregating 

 $5100 for exhibits of kitchen, dairy, and farm products, flowers and domestic needle- 

 work made or grown by the exhibitors and shown at the county fair next fall. 



International Congress of Agricultural Education. — In connection with the Interna- 

 tional Exposition to be held this year at Liege, Belgium, under the patronage of the 

 Belgian Government, there will be a second session of the International Congress of 

 Agricultural Education, July 28 and 29, which the officers of the agricultural colleges 

 and experiment stations in this country are especially invited to attend. 



Association of American Agricultural Colleges and Experiment Stations. — The nine- 

 teenth annual convention of the Association of American Agricultural Colleges and 

 Experiment Stations will be held at Washington, D. C, in the early part of Novem- 

 ber next. 



National Association for the Study and Prevention of Tuberculosis. — The first animal 

 meeting of this association was held in Washington, D. C, May 18 and 19, 1905. 

 While the greater number of the papers and addresses presented related exclu- 

 sively to human medicine and sanitation, such as the opening addresses of Pres- 

 ident Dr. E. L. Trudeau and Vice-President Dr. William Osier, on the importance 

 of education in combating tuberculosis, several papers were of particular interest in 

 connection with the study of tuberculosis in animals. 



In the pathological and bacteriological section Dr. W. H. Welch discussed the 

 Channels of Infection in Tuberculosis. The speaker believed that a sufficient num- 

 ber of cases are now on record to demonstrate that tuberculosis may be transmitted 

 from man to animals. As regards the determination of the transmissibility of tuber- 

 culosis from animals to man the decisive point was believed to be the recognition of 

 the nature of the bacillus. The speaker referred to the limited number of cases of 

 human tuberculosis which have been accepted as of bovine origin on account of the 

 characteristics of the bacillus, and stated that sufficient evidence has now been 

 obtained to show that the majority of cases of human tuberculosis are of human 

 origin. 



Dr. A. J. Richer reported favorable results with the use of Marmorek's anti- 

 tubercular serum, stating that no effects were observed when this serum was injecttd 

 into healthy subjects. 



Experimental work on Serum Diagnosis of Tuberculosis was reported by Dr. H. M. 

 Kinghorn. A reaction was obtained more frequently in the incipient or favorable 

 cases than in advanced cases of tuberculosis. The speaker did not believe that the 

 serum agglutination test can be relied upon to determine the presence or absence of 

 this disease. While obtaining slightly different results, Dr. H. R. M. Landis agreed 

 that the agglutination test is not at present available for diagnostic purposes. 



Particular interest was centered in the studies in immunity in tuberculosis by Drs. 

 Trudeau, E. R. Baldwin, J. L. Nichols, H. M. Kinghorn, and A. H. Allen at Sara- 

 nac Lake. A detailed report of the properties of the serum of immunized rabbits 

 was read by Dr. Baldwin, and a histological study of the lesions in immunized rab- 

 bits was reported in a paper by Dr. Nichols. The authors studied the immunity 

 reaction described in 1893 and 1903 by Dr. Trudeau which results in rabbits first 

 receiving a weak intravenous inoculation of human tubercle bacilli, followed later 

 by a virulent one. Forty-three rabbits were inoculated in this manner and 35 con- 

 trols received the virulent inoculation only. The animals were killed in pairs of 

 one or more of each set or series in succession from the first to the sixty-first day. 

 Observations of the temperature indicated a higher average for the immunized 

 animals during the first 10 days as compared with the controls, but this was 

 reversed during the next 10 days. The symptoms of illness corresponded with the 

 emperatures. The serum showed earlier and higher agglutination for the i mnm - 

 nized animals, and it developed from the fifth to the twelfth day after the virulent 



