Weil's disease (infective jaundice) is given full—not to say lavish—treatment in an article of 174 pages by Uhlenhuth and Fromme. Due attention is given to the matter of priority in the discovery of the specific spirochete (Leptospira icterohemorrhagica), but the most that can be claimed is that, although Inada anticipated the German investigators in point of time, the latter did not know of his work and discovered the spirochete afresh. The authors discuss the relation of infective jaundice and yellow fever and conclude quite definitively that Noguchi's spirochete "Leptospira icteroides" is identical with the spirochete of infective jaundice. Baermann described in a separate article the Sumatra type of infection with what seems to be the same organism. This issue of the Handbuch also contains articles on spirochetal diseases of fowls and rabbits.