2126 PRAIRIE AVENUE, CHICAGO

T1he need for education in the principles of conservation is imperative. As Henry Fairfield Osborn states the matter, "We are yet far from the point where the momentum of conservation is strong enough to arrest and roll back the tide of destruction." The movement for the preservation of natural resources can succeed only with the establishment of an enlightened public sentiment on the subject. To create and maintain such a sentiment is the proper work of the schools. In making this _Conservation Reader_ available for school use, author and publishers have had in mind the great and lasting service that such a text might render. The publishers believe that this little volume and others forthcoming in the Conservation Series will rank high among "Books That Apply the World's Knowledge to the World's Needs"

2Copyright, 1920, by World Book Company Copyright in Great Britain _All rights reserved_