Mechanisms of Congenital Malformation. Proceedings of the Second Scientific Conference of the Association for the Aid of Crippled Children.

This small volume will be of interest and importance not only to pediatricians but to obstetricians, internists, specialists in other fields, nurses, social workers, educators, and even members of the lay public. The lucidity and clarity of arrangement are a tribute to the editorial committee, of which Dr. S. R. M. Reynolds was chairman and Mr. Harold Wolff the editor. The book was an outgrowth of a meeting called by the Association for the Aid of Crippled Children at which none of the 43 participants were to prepare papers. They were to "interchange current ideas, take new soundings and plot new directions for the future... and hope... that a cross-fertilization might be achieved...." This was therefore a conference to explore frontiers and to discuss ideas for future investigations that might come out of a comparison of different experiences. The participants were men of repute from many countries, most of whom