Statistical Methods in Clinical and Preventive Methods

sonme discussion of infantile deprivation and of the effect of hypoacusis and dysacusis. The scholarship is impressive, but many of the papers are overloaded with detail and basic, and especially new, concepts are few and seldom presented in a form to stimulate discussion. Too often the discussion fails to elucidate or amplify the papers. The book is beautifully produced and accurately printed, but the delay of over two years is too high a price to pay for this. Already, especially in such aspects as chromosomes in mongolism, the presentation is dated. Nevertheless much valuable information, otherwise difficult to locate is assembled here. J. E. M.