Dr. Field has written a book that may be said to stand alone in medical literature. A practical work on the indications, action, application and contraindications of cathartics and emetics is something that, so far as we are aware, did not exist in medical literature until the appearance of this book. Many practitioners have favorite "purgatives" which they are inclined to use indiscriminately. Dr. Field's little book will be of great value to such, if they study it, as well as to others. The book is one of much value, and there is nothing that can take its place. The only criticism to be made is that no mention is made of the use of glycerine in combination with castor oil, which, in small doses, is a most valuable evacuant is cases of impacted colon.