40 a EXPERIMENT STATION. [Jan. 



In the investigations connected with Bacterium pullorum 

 infection, a large amount of most careful scientific work has 

 been done. No less than 27 different strains of the organism 

 isolated from birds in this State have been under observation 

 since 1915, and during the past year 10 new strains have been 

 added. The agglutinins elaborated by animals and birds are 

 being thoroughly tested. A very large number have been ex- 

 amined, but up to date no toxin suitable for the further work in 

 view has been found. 



The campaign for the suppression and eradication of bacillary 

 white diarrhoea in the State has been actively in progress since 

 February, 1915, between which date and January, 1917, when 

 this report was prepared, 14,851 birds have been tested. These 

 were found in 57 different towns scattered throughout the State, 

 and the infection appears to be quite general. Where the 

 directions of the department as to disinfection and sanitary 

 measures, following the removal of infected birds, have been 

 carefully and thoroughly carried out, the result has been the 

 practical elimination of the disease from tested flocks. 



The following article by a member of the department staff, 

 based on station work, has been published during the year: — 



G. Edward Gage: Notes on the Histo-Pathology of the Intestines in 

 Young Chicks infected with Bacterium Pullorum. The Journal of 

 Medical Research, Vol. XXXIV., No. 2 (new series, Vol. XXIX., 

 No. 2), pp. 149-155, May, 1916. 



REPORTS AND BULLETINS. 



The reports of the treasurer and of the different departments 

 immediately follow the director's report. The bulletins to which 

 reference has been made will be found in Part II. of the annual 

 report. 



V^M. P. BROOKS, 



Director. 



