...caused by a parasite known as the scab-mite or itch pest — Psoroptes communis, Fiirst., var. ovis. It is much larger than the Sarcoptes, which causes head...being visible to the unaided eye. Disease. — Of the diseases of sheep, scab is one of the most feared by the flock-master. So insidious is its attack,...

...DE Salmon, chief of the National Bureau of Animal Industry, will be interesting in this connection: "Of all the diseases of sheep in this country, scab is the worst feared by the flock-master. So insidious in its attack, so rapid its course, so destruct-, ive...

...DE Salmon, chief of the National Bureau of Animal Industry, will be interesting in this connection: "Of all the diseases of sheep in this country, scab is the worst feared by the flock-master. So insidious in its attack, so rapid its course, so destructive its...

...many of the States have stringent laws in force for its quarantine or extermination. Curtice says: Of all the diseases of sheep in this country scab is the most feared by the flock master. 80 insidious is its attack, so rapid its course, so destructive its effects, and so difficult...

...(1898) say amounts to from 10 to 80 per cent of the flock attacked. Curtice (1890 c) says of scab: Of all the diseases of sheep in this country, scab...rapid its course, so destructive its effects, and so difficuit is it to exterminate that it has justly earned the distinction of being more inlurious than...

...many of the States have stringent laws in force for its quarantine or extermination. Curtice says: Of all the diseases of sheep in this country scab is the most feared by the flock master. So insidious is its attack, so rapid its course, so destructive its effects, and so difficult...