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قراءة كتاب Coyotes in Their Economic Relations
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Coyotes in Their Economic Relations
U. S. Department of Agriculture,
Biological Survey,
Washington, D. C., March 23, 1905.
Sir: I have the honor to transmit herewith for publication as Bulletin No. 20 of the Biological Survey a report on Coyotes in their Economic Relations, prepared by David E. Lantz, assistant. The subject is of immediate importance to the sheep industry of the West, where the wasteful method of sheep herding prevails. If in the range country sheep can be fenced with coyote-proof fencing at moderate cost, as seems probable, herding may be done away with and the sustaining capacity of the lands thereby greatly increased.
Respectfully,
C. Hart Merriam,
Chief, Biological Survey,
Hon. James Wilson,
Secretary of Agriculture.