The preface to this book states that "this revision of the book was made necessary by the changes in the last United States Pharmacopoeia. The book aims to present in a brief space in tabular form all the drugs and preparations recognized by the Pharmacopoeia. It is interleaved for the convenience of the physician. It contains the doses and the decimal system, as well as the old English form, with samples of prescription writing in the metric system. The little book will be found extremely useful.