THE second edition of this useful little work has been revised, the sections on sugars and complex aromatic compounds have been re-written to bring them up to date and give the modern ideas on their structural formulæ, and the index has been enlarged. The author, however, has been careful not to expand the text so as to change the character of the book. The volume provides a concise summary of organic chemistry which will be very useful to medical students in the preparation and revision of the subject, and it is a useful supplement to text-books which deal with the topics in more detail.
Aids to Organic Chemistry
By. (Students' Aids Series.) Second edition. Pp. viii + 120. (London: Baillière, Tindall and Cox, 1939.) 3s. 6d.