 ... development at the commencement of spring-time, that they occasion morbid troubles. The latter begin by a discharge, often unilateral, which is at first clear and serous, then thick and mucous. Frequently there is sneezing and snorting, accompanied...  The Animal Parasites of Sheep - Página 30por Cooper Curtice, United States. Bureau of Animal Industry - 1890 - 222 páginasVista completa - Acerca de este libro
 | University of Minnesota. Agricultural Experiment Station - 1895 - 1192 páginas
...Frequently there is sneezing and snorting, accompanied by the expulsion of mucus and sometimes of (Estrus larvae. Later the animals turn the head backward,...walking in water. Sometimes they quickly raise the head, carding the nose to the wind, and then bend it backward convulsively. From time to time they stagger... | |
 | University of Minnesota. Agricultural Experiment Station - 1896 - 1036 páginas
...Frequently there is sneezing and snorting, accompanied by the expulsion of mucus and sometimes of (Extrm larvae. Later the animals turn the head backward,...raise the head, carrying the nose to the •wind, and then bend it backward convulsively. From time to time they stagger and are seized with vertigo,... | |
 | Minnesota. State Entomologist - 1896 - 292 páginas
...Frequently there is sneezing and snorting, accompanied by the expulsion of mucus and sometimes of (Estrus larvae. Later the animals turn the head backward,...quickly raise the head, carrying the nose to the wind, and then bend it backward convulsively. From time to time they stagger and are seized with vertigo,... | |
 | University of Minnesota. Agricultural Experiment Station - 1896 - 1124 páginas
...Frequently there is sneezing and snorting, accompanied by the expulsion of mucus and sometimes of (Estrus larvae. Later the animals turn the head backward,...quickly raise the head, carrying the nose to the wind, and then bend it backward convulsively. From time to time they stagger and are seized with vertigo,... | |
 | Minnesota. State Entomologist - 1896 - 286 páginas
...Frequently there is sneezing and snorting, accompanied by the expulsion of mucus and sometimes of (Estrus larvae. Later the animals turn the head backward,...quickly raise the head, carrying the nose to the wind, and then bend it backward convulsively. From time to time they stagger and are seized with vertigo,... | |
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