University Lectures Delivered by Members of the Faculty in the Free Public Lecture Course, Volúmenes3-4;Volúmenes1916-1917The University, 1917 |
Dentro del libro
Resultados 1-5 de 11
Página 211
... cattle , hogs and sheep cannot be sold to the butcher for less than it costs to produce them and losses from disease must be counted in with other expenses . The butcher must sell the meat and other products at a profit and if an animal ...
... cattle , hogs and sheep cannot be sold to the butcher for less than it costs to produce them and losses from disease must be counted in with other expenses . The butcher must sell the meat and other products at a profit and if an animal ...
Página 212
... cattle owners in certain parts of the country . Cattle shipped by rail or driven overland from the southern portion of the United States to the more northerly sections never failed to leave a trail of diseased and dying animals in their ...
... cattle owners in certain parts of the country . Cattle shipped by rail or driven overland from the southern portion of the United States to the more northerly sections never failed to leave a trail of diseased and dying animals in their ...
Página 213
... cattle which spread the disease always had a large number of insects , called ticks , attached to their skin . An investigation by the late Dr. D. E. Salmon , then chief of the United States Bureau of Animal Industry , discov- ered the ...
... cattle which spread the disease always had a large number of insects , called ticks , attached to their skin . An investigation by the late Dr. D. E. Salmon , then chief of the United States Bureau of Animal Industry , discov- ered the ...
Página 214
... cattle were observed because they were much larger ( about the size of a bean ) . These discoveries have proven of extraordinary value . They made it possible to arrange a system whereby cattle can be shipped from the tick - infested ...
... cattle were observed because they were much larger ( about the size of a bean ) . These discoveries have proven of extraordinary value . They made it possible to arrange a system whereby cattle can be shipped from the tick - infested ...
Página 215
... cattle economically , but the native cattle were of an inferior type and animals of a better type could not be introduced from the north to breed up the herds because they almost invariably were infected with Texas fever and died . With ...
... cattle economically , but the native cattle were of an inferior type and animals of a better type could not be introduced from the north to breed up the herds because they almost invariably were infected with Texas fever and died . With ...
Otras ediciones - Ver todas
Términos y frases comunes
advertising American animals anthrax army Asclepius asteroids Athens Baiae Bramante building Cardan cattle cause cent century Ceres child corporation court Cynthia defective Demosthenes direct current discovery disease economic electric English Epidaurus Europe fact familiar essay familiar essayist feeble-minded gardens give Greek horses human important increase individual infected influence institutions interest Jupiter kilowatts knowledge lamps large number larvæ Latin lawyer learned light matter medicine ment mental method modern Montaigne nature observed ophthalmology orbit organization Pennsylvania person plant practical present principle probably problem Professor Propertius psychology psychophysics reason regard relation rules social South America synchronous condensers teacher things thought threshold Tibullus tion trachoma United University of Pennsylvania veterinary voltage writes