When Justice Douglas talks of conservation, he is actually pleading for a roadless wilderness, with no permits to lumbering interests, to recreational areas; with sharp restrictions on polluting of streams; with controls of spraying programs from the air which destroy wildlife and upset the balance of nature. Actually he wants to eliminate the multiple use provision and establish the single use-to maintain the wilderness which is one of the gifts America affords. This is the theme that permeates each one of these pieces, whether he is writing about Colorado or Arizona, the Smokies, the Potomac, the Everglades, the White Mountains, the Allagash lake chain in Maine. But there is more to his book than this. There is the scent and feel and look and quality of each section. There is more than he usually writes about the wild life and the botanical aspects. There are personal adventures of place and people. Definitely a book for those who share his love of the wilderness.