More than 30 years ago it was said that we may never be able to cure most cancers, but that we may some day prevent them or arrest them for long periods. Boyd's little book is aimed in this direction. It consists of a collection from the literature and from Boyd's own experience of instances of spontaneous disappearances of cancers, or in some cases, very long inactivity. Then there follows a chapter of speculation, by far the most interesting and important part of the book. Fortunately, we no longer think speculation can be neglected in science. Boyd thinks that regressions have to do with the effects of therapy, the influence of hormones, the action of immune bodies—all of them susceptible to manipulation by man.
The book is written in Boyd's usual clear language, so understandable that you may even be able sometimes to disagree with him, also in his usual