How to treat snakebite, start a fire with a car battery, collect water in the desert, eat insects and earthworms when you get desperate enough, and maintain morale. . . . The city kid who would make all the same mistakes as the author's ""young friend,"" a cautionary example in the first chapter, would do better with the Boy Scout manual on Wilderness Survival than with these sketchily described, last ditch measures. In any case the odds are slim on such a greenhorn getting far enough away from civilization to be lighting signal fires or eating raw frogs.