...To prevent cattle from becoming infested with this parasite care should betaken that human feces are not placed where they will contaminate the feed ordrinking water...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The food should not be damped more thantwenty minutes or half an hour at the most before it is given, and a dirtybucket will easily contaminate it...
Joshua A. Nunn 「Notes on Stable Management in India and the Colonies」
...Mostof them escaped (probably to contaminate the local stock of Caribou),and by 1916 the last survivor of this band in captivity had succumbed(Hewitt, 1921: 329-330)...
Francis Harper 「The Barren Ground Caribou of Keewatin」
...This lengthens his life expectancy immeasurably, byliterally burning from his system the germs of actual or incipientills that contaminate the blood-stream...
Various 「Astounding Stories of Super-Science, May, 1930」
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