This little brochure of nearly 100 pages consists in substance of the Harveian lectures for 1890. The subject is not only an important one but in the author's hands has been developed into one of great interest. Unlike the majority of English authors Dr. Champneys has a succinct and practical style which is a sine qua non in medical monographs. The subject of membraneous dysmenorrhœa received considerable attention, several large tables being appended which contain the complete bibliography of this interesting subject. The busy practitioner will find the work a valuable one.