Miss Marquardt presents a vivid picture of one of the great scientists of all time. While Ehrlich's work is dealt with in considerable detail, the author's idea has been also to expose the nature of the man and to portary him as a real person. This line is skilfully followed, and the device of reporting "conversations" between Ehrlich and his friends and colleagues makes everything very realistic. On the whole, however, the book is essentially one of appreciation, but this is no criticism, since surely this great man, like others, deserves his Boswell.
There are numerous interesting photographs of both persons and pertinent places.