Feb.. 1927] PROGRESS OF AGRICULTURAL EXPERIMENTS 43 



Testing Pullets for White Diarrhea — {Miscellaneous Income) 



Severni unsupported statements are made in the literature to the 

 effect that carriers of S. pvllorem will not in most instances show typi- 

 cal and definite sereological reactions to the agglutination test before 

 they have laid a considerable number of eggs. To determine the facts 

 in this matter, a pen of 125 pullets that had suffered from white 

 diarrhea as chickens was housed and tested by E. M. Gildow at monthly 

 intervals from the 4th month after they were hatched until they were 

 nine months old. During this j^eriod reactions to the agglutination test 

 were as follows: 



4 months 2 reactors 



5 months 4 reactors 



6 months 3 reactors 



7 months 2 reactors 



8 months 1 reactor 



9 months reactor 



The birds showing reactions were moved after each test; this elimi- 

 nated the possibility of transmitting the disease from one bird to an- 

 other. As a point of interest it might be stated that these pullets 

 started laying at 41/2 to 5 iiioiitlis of age. The experiment is not yet 

 completed. 



