EXPERIMENT STATION BULLETINS. 



437 



neither kills nor removes all these bacteria, it is easy to understand how 

 they may reach the month or food that is not subsequently cooked. The 

 tubercle bacteria have also been found in the white of the egg. For- 

 tunatelv, however, the affected chickens soon cease to lav. The eating 

 of eggs from tuberculous hens, raw or only partially cooked, as when 



to 



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3 



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the white is left uncoagulated, may result iu taking living tubercle 

 bacteria into the body. 



The symptoms of tuberculosis in chickens are not sufficiently char- 

 acteristic to ixirmit of a positive diagnosis, but they nuiy lead to a 

 strong suspicion. A])petite may remain until a few days before death, 

 emaciation becomes extreme, feathers are ruffled, the fowl is weak and 

 (lumpish, moving about little. The eyes may be bright, (liough sunken. 

 The comb and wattles become pale and flabby, and the mucous mem- 



