...The net result of the whole policy of serfdom was so to deplete theranks of laborers that a new solution of the labor problem must befound... 
Booker T. Washington 「The Negro in the South」
...Copiousblood letting in the earliest stages has been highly recommended, however, asthis has a tendency to deplete the system and lessen the exudation ofinflammatory products...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
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