82 LEHMAN'S POULTRY DOCTOR. 



tions favor their development, but it is a known fact 

 that we cannot produce lice, and that animate beings 

 must come from like animate parents; hence, with 

 whatever kind of lice the fowl is infested, the same 

 originated from that particular species. 



When the rapidity with which lice multiply is taken 

 into consideration, we can roadily see how, under fav- 

 orable circumstances, myriads of lice may develop in 

 a short time, from only a few lice. According to 

 Leuwejihoeck, quoted by Newmann, a single female 

 buse may, in eight weeks, become grandmother of 

 10,000 lice and, according to some authorities, the 

 third generation of a single louse may reach 125,000. 



Symptoms: Ths diagnosis of lice is easy if a care- 

 ful search is made by parting the feathers and exam- 

 ing the skin, especially on the head, about the vent, 

 and under the wings and belly. Suspicion should be 

 aroused by such symptoms as the birds pecking them- 

 selves, being restless on the roosts, leaving the nest 

 v/hen hatching, comb and wattles becoming pale; or 

 sometimes, fowls are so badly infested that they be- 

 come sick or succumb to a bad diarrhoea, which is 

 often mistaken for cholera, but has no relation, what- 

 ever, to cholera; when such symptoms exist, fowls, 

 and all crevices about the roosts and nests should be 

 carefully examined. 



Treatment must be persisted in and repeated every 

 week or two, because a few lice and nits left will soon 

 develop a new crop. 



