The American shepherd: being a history of the sheep, with their breeds, management, and diseases . ted to death, or becomesincrusted with scab. M. Walz satisfactorily traced the par-asite through all its changes, and by experiment discoveredits mode of action, and method of infection. He found thatwhen the male acari was placed on a sheep it burrowed, thepustule was formed, but the itching and scab soon disappear-ed without the employment of any remedy. Such was notthe case where the female acari was placed on the soundskin ; as with the breaking of the pustule from eight to. fif-teen little o
The American shepherd: being a history of the sheep, with their breeds, management, and diseases . ted to death, or becomesincrusted with scab. M. Walz satisfactorily traced the par-asite through all its changes, and by experiment discoveredits mode of action, and method of infection. He found thatwhen the male acari was placed on a sheep it burrowed, thepustule was formed, but the itching and scab soon disappear-ed without the employment of any remedy. Such was notthe case where the female acari was placed on the soundskin ; as with the breaking of the pustule from eight to. fif-teen little ones made their appearance. M. Walz found thatthe young acari kept in a dry place, dried and crumbled todust; but when old, that it would retain its life through thewhole winter ; thus proving the necessity of not relying onthe season for their destruction, but on preparations of activemedicine when the disease shows itself. Of the origin ofthese insects, we of course can know nothing ; it is enoughthat we are certain when they make their appearance theycan be met and destroyed.—[Cultivator.). Fig 1. The insects of their natural tize on a dark 2. The ttmale, of 366 times the natural size, larger than the male, of anoval form, and provided with eight feet, four before and four behind. a. The sucker. b. b. b. b The four anterior feet, with their trumpet-like appendices. c. c. The two interior hind-feet. d. d. The two outwurd feet, the extremities of which are provided with somelong hairs, and on other parts of the legs are shorter hairs. To these hairs theyoung ones adhere when they first appear from the pustule. e. The tail, containing the anus and vulva, garnished by some short 3. The male on his back, and seen by the same magnifying power. ERYSirELAS. 373 Treatment.—Shear off the wool about the pustules, thenlet the scab be removed with knife or comb : after which thediseased parts must be washed with soap and water ; thenapply the following mixture :
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectsheep, bookyear1851
