Excerpt from A Text Book of Materia Medica, Being an Account of the More Important Crude, Drugs of Vegetable and Animal Origin, Designed for Students of Pharmacy and Medicine

The conditions under which this, the third edition, has been prepared, have been somewhat adverse. While it was considered desirable to add brief accounts of a number of drugs in less frequent use, duo regard has had to be given to tho high cost of production. A reduction in the number of pages has been made possible by tho use of a slightly smaller type and by the omission of the classification according to natural orders and of a few of tho illustrations. Notwithstanding this reduction in size, the number of drugs dealt with has been very considerably increased, and numerous notes have been added in order to increase the general utility of tho work.

All temperatures are now stated in degrees Centigrade.

The present volume, published under the title of a 'Text-Book of Materia Medica, ' constitutes a second edition of the author's 'Introduction to the Study of Materia Medica' which appeared in 1899. This change in title has been rendered desirable by the numerous additions that have been made to the work with tho view of broadening its scope. To this end a chapter on the history and commerce of drugs has boon added. Each section has been prefaced by a short introduction, including, in the section dealing with 'Animals and Animal Glands and Secretions, ' a brief outline of modem zoological classification. For the convenience of advanced students the microscopical characters of, and assay processes for, a number of important drugs have been added.

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