During the past decade astonishing advances have been achieved in the field of blood coagulation. Much of this newer knowledge has directly involved or stemmed from progress in the specific area of hemophilia and closely related hemorrhagic disorders. So rapid and often bewildering have developments been that a number of symposia on blood clotting have been held during this period in order to bring scientists and clinicians abreast of work in far-flung laboratories. A recent effort in this direction was the International Symposium held in New York in August, 1956, the proceedings of which have been published in the small volume "Hemophilia and Hemophilioid Diseases."
This symposium was attended by virtually every authority on hemophilia from Europe and England, North and South America, and Australia. The book, organized into seven major sections, each incorporating several articles and followed by a panel discussion, is a distillation of current thought on the