32 



tio-n.s for this j)iirit().s<^ i.s a solnlion of balsam of l*eru 

 in aJc(>hoI (1 part to 5). This can be applied Avith a 

 sponge oi' soft brush, and should reach not only the 

 diseased area but the healthy skin for a distance of 

 about an inch on all sides. Another eflicient applica- 

 tion is sulphur ointment, or a solution of creolin (1 

 j)art to 50) may be used, but shctuld be ap])lied lij^htly 

 and not rubbed in, because if apjilied too fieely or 

 energetically it may poison the fowl. 



.'j. PROTOZOA. 



liarnyard f(>\vls, tr.ikeys. and especially pigeons, are 

 sometimes attacked by a peculiar wart-like growth 

 That apiicars about the head, the base of the beak, the 

 eyelids and ilie orifices of the nose, and sometimes 

 spreads to the base of the wings and the general sur- 

 face of the body. These growths are yellow and 

 smooth and resemble the warts that frequently appear 

 on the hands. They are contagious, spreading from 

 one bird to another, usually slowly, but sometimes 

 with considerable rapidity, and aie caused by a minute 

 animal parasite belonging to the Protozoa. 



That these growths are contagious has been fre- 

 quently proven by experimentation. One of them can 

 be removed and a small portion of it rubbed over the 

 scarified skin of a healthy fowl. Within eight or ten 

 days the surface will show a perceptible elevation at 

 ihe point of inoculation, and a few days later the new 

 warty growth ^^ill be plainly developed. These warts 



