42 LEHMAN'S POULTRY DOCTOPv. 



dust or inoculated through a wound. But there are 

 many accessory causes that favor the propagating and 

 disseminating of the germs, such as filth and over- 

 crowding, fowls drinking filthy, stagnant water, allow- 

 ing the droppings to accumulate, especially during hot 

 weather. The disease may be contracted at poultry 

 shows or fairs, where birds may become aflfected and 

 carry the disease to poultry yards, or buzzards feed- 

 ing on a fowl that has died from cholera may readily 

 carry the infection for miles and contaminate poultry 

 yards. Flies are capable of carrying the germ by 

 flying from the decaying carcass of a fowl that has died 

 from cholera, on the food of healthy fowls, or the 

 food may become contaminated by fowls carrying the 

 germ on their feet or bills. Men or animals may 

 carry it with their shoes or feet. 



Symptoms: There is extreme dullncrs; ruffling of 

 the feathers; the bird is seen off by itself with head 

 and wings hanging to the ground and is apparently 

 sleeping; comb and wattles are of violet color; no ap- 

 petite, but great thirst. The crop is nearly always 

 full, which, however, is a symptom of almost any di- 

 gestive disorder and, alone, would not be considered a 

 symptom of cholera. Often there is a frothy dis- 

 charge from the mouth, a greenish diarrhoea will sud- 

 denly set in and the bird will in many cases die of 

 convulsions. 



The disease usually shows itself in from 18 to 48 

 hours after the germ has been taken into the system, 



