In this review of "Useful Cathartics", published under the auspices of the American Medical Association, Fantus presents the alternatives in a reasonable way. The ""back to nature"" cry of the faddist, he writes, need not lead us to the habitual admixture of sawdust, bran or similar substances to our food. When, however, there is constipation, the question whether increase in cellulose is indicated is important. Unless the patient is of the type characterized...