No attempt to compile and publish a complete dental bibliography has heretofore been made, and this volume is the only work of its kind in existence. One who has never engaged in such an effort can form no adequate idea of the amount of labor involved in the production of a bibliography of this character. The work must prove invaluable to those engaged in the formation of dental libraries, and to those desiring to study the literature of any dental subject. The thanks of the dental profession are certainly due to the publisher, to whom it must have been evident in advance that the enterprise would result in pecuniary loss, but who nevertheless spared no expense necessary to the production of a volume of which every dentist may justly feel proud. A copy of this book should be in the library of every member of the profession who aspires to a familiarity with the literature of his specialty.—-J. H. S.

The Essentials Of Histology. Descriptive and Practical. For the use of Students. By E. A. Schaper, F. E. S., Jodrell professor of physiology in University College, London, etc. Octavo, 245 pages; 281 illustrations. Philadelphia: Lea Brothers & Co.> 1885. Price, cloth, $2.25.

This book, as we are informed in the preface, was written with the object of supplying the student with directions for the micro, scopical examination of the tissues, and to serve as an elementary text-book of histology. For conveniently accompanying the work of a class of medical students, the book is divided into forty-two lessons. Only those methods are recommended which long experience has proved can be fully depended upon. The author is well and favorably known as the editor of the histological portion of "Quain's Anatomy," which fact is a guarantee of the practical character of the volume. The lessons, beginning with an enumeration of the tissues, and the general structure of animal cells, include the use of the microscope, the study of human and other blood-corpuscles; the action of reagents, and the characteristic structural features of all the tissues. The plan of the book makes it well adapted for a textbook. It comprises all the essential facts of the science of histologyChapter XXVI is largely devoted to the histology and development of the teeth. The work, though very much condensed, has been creditably done. The illustrations of the minute anatomy of the teeth are of the orthodox kind which have appeared in most works on histology during the past twenty-five years. An error appears in Fig. 150, representing a vertical section of a tooth in situThe fibers of the periosteum or pericementum are running in the wrong direction. The drawings illustrating the development of the teeth are much above the average of works on general histology.

The author says in the text that "the teeth are developed in the same manner as hairs." This is not correct. He should have said in a similar manner. There are important differences in the development of hair and teeth. Pigs. 156 and 157 present, we believe, the first authoritative confirmation of the views held by Dr. J. L. Williams of the structure and morphology of the enamel-organ and the odontoblasts. The odontoblasts are represented as oblong, nucleated cells, from which arise the dentinal fibrillse, several of these processes sometimes arising from a single odontoblast. The odontoblasts are also correctly represented as sending processes backward into and connected with the reticulum of the pulp.

A Text-book Of Medical Chemistry. For Medical and Pharmaceutical Students and Practitioners. By Elias H. Bartley, M.D., professor of chemistry, etc. With forty illustrations. Philadelphia: P. Blakiston, Son & Co., 1885. Price, cloth, $2.50. As stated in the preface, "this book is designed especially as a text-book for medical students during their attendance upon lectures." It will commend itself to the student for the reason that, while very comprehensive in its scope, the concise and clear manner in which the various descriptions of individual substances and statements of general principles, together with the relations of the facts of the science to medicine, are presented make it a work which affords a real pleasure to study, especially to those who have labored with the more voluminous works on the subject. It is fully up to the present state of the science. Part I is devoted to a presentation of the more important fundamental facts in chemical physics necessary to a proper understanding of the use of the thermometer, spec troscope, medical batteries, etc. Part II is a concise section on theoretical chemistry, including notation, nomenclature, chemical reactions, and stoichiometry. In Part III the natural history of the elements and principal compounds with their physiological and toxicological bearings are presented, and Part IV is devoted to a study of such of the organic compounds as the physician is likely to meet with. Tables of weights and measures, specific gravities, solubilities, etc., and a glossary of unusual chemical terms are added in the appendix.

Though written especially for the college student, it should fill an important place in the library of the practitioner of both medicine and dentistry, being full of just such information as he is in almost daily need of, in a form more readily accessible than in any similar work we are aware of.

The distinguishing features of the book are its clear and concise style, and the compact arrangement of its matter, with an entire absence of everything superfluous to the needs of the student,—qualities which must commend it as, a text-book. In view of the vast accumulation of chemical facts, it is surprising to what extent they have been condensed in the present volume without a sacrifice of clearness of expression or matter.—E. C. K.

Applied Medical Chemistry. A Manual for Students and Practitioners of Medicine. By Lawrence Wolff, M.D., demonstrator of chemistry, Jefferson Medical College, etc. Octavo, pp. 167 and index. Philadelphia: P. Blakiston, Son & Co., 1885. Price cloth $1.50.

This is a hand-book of chemistry as applied to medicine, and includes the chemistry of poisons with the means for their detection and estimation, together with the apparatus and reagents necessary for that purpose, as well as a sufficiently full description of the method of using them. A section is devoted also to an investigation of the substances composing animal structures, and those which are capable of being elaborated into them, together with the chemistry of the secretions and excretions. The last section treats of sanitary chemistry, including food adulterations.

The book places in the hands of the practitioner a full and reliable guide in testing for the various substances used as poisons and food adulterants, as well as a complete method for analysis, both qualitative and quantitative, of the urine and of vesical calculi.

An admirable addition to the work are the syllabi appended to each chapter, which are intented as practical exercises for the student, by which the facts taught are more definitely fixed upon the mind.

Though intended for the student, the work will undoubtedly be welcomed by the physician or specialist whose calling necessitates the frequent answering of questions bearing upon pathological conditions of the urine, medical chemistry, and toxicology, or the investigation of the purity of foods. The behavior with reagents of all the substances having any bearing on the above subjects is fully stated, which renders it valuable as a work of reference.—E. C. K.

A System of Practical Medicine. By American Authors. Edited by William Pepper, M.D., LL.D., assisted by Louis Starr, M.D. Volume III.—Diseases Of The Eespiratory, Circulatory, And Hematopoietic Systems. Imperial octavo, pp. 1032. Philadelphia: Lea Brothers & Co., 1885. For sale by subscription only; price, cloth, $5.00; leather, $6.00; half Russia, raised bands and open back, $7.00. In previous numbers of the Dental Cosmos we have noticed the first and second volumes of this "System of Medicine," and the commendation to which they were considered justly entitled seems to be equally deserved by the volume before us. The same clear, terse, and comprehensive treatment of the various topics is apparent and noteworthy.

A list of the contributors alone is sufficient to indicate the character of the essays: Drs. D. Hayes Agnew, Harrison Allen, Edmondson T. Atkinson, Edward T. Bruen, Samuel C. Bussey, William Carson, Samuel C. Chew, Elbridge G. Cutler, J. M. Da Costa, ]ST. S. Davis, Frank Donaldson, Louis Elsberg, Austin Flint, G. M. Garland, W. H. Giddings, Abraham Jacobi, Hosmer Johnson, George M. Lefferts, Morris Longstreth, Alfred L. Loomis, John S. Lynch, William Osier, William Pepper, John B. Eoberts, Beverly Eobinson, Carl Seiler, and Andrew H. Smith. The contents of this volume are Diseases of the Kespiratory System, of the Circulatory System, of the Blood, and of the Haematopoietic System.

Milk Analysis And Infant Feeding. A Practical Treatise on the Examination of Human and Cows' Milk, Cream, Condensed Milk, etc., and Directions as to the Diet of Young Infants. By Arthur Y. Meigs, M.D., physician to the Pennsylvania Hospital, etc. 12 mo, 102 pp. Philadelphia: P. Blakiston, Son & Co., 1885. Price, cloth, $1.00.

The author, in his introduction to the volume, quotes from the mortality statistics of the United States the startling figures 175,266 as the number of children under one year of age who died in the census year of 1880, and from the Public Ledger the statement that "more than one-quarter of the total number of deaths that took place in the city of Philadelphia in the year 1883 was of children under one year of age."

These figures indicate the necessity for the dissemination of knowledge which may lessen infant mortality. It is certain that a very large proportion of the deaths of infants under two years of age is from nutritional disorders, and that many of them are avoidable.. Any methodical consideration of the subject which tends toward more positive conclusions regarding the composition ol human milk, and the best substitutes for it, should be heartily welcomed. The method of analysis and the comparison of human and cows' milk are carefully stated, the author considering the results as satisfactorily demonstrating that human milk contains only about one per cent, of casein. The artificial feeding of infants is then discussed, from the stand-point of a proper understanding of the composition of human milk, its proximate constituents, and the proportions in which they exist, in order to an intelligent effort to •determine how the same elements may be had and mixed so as to make an artificial food which shall approximate it in its essential qualities. The work is a substantial contribution to the literature of the subject, and is commended to the study of all concerned in the solution of the vexed problem of infant feeding.

Quiz Questions: Course on Dental Pathology and Therapeutics, Philadelphia Dental College. By Prof. J. Foster Flagg, D.D.S. Answered by William C. Foulks, D.D.S., formerly demonstrator and instructor in the Philadelphia Dental College. Third edition? revised and enlarged. 12 mo, 129 pp. Philadelphia: The S. SWhite Dental Mfg. Co., 1885. Price, cloth, $2.00. The necessity for a third edition of this work shows that it has been well received. It has been revised and enlarged, and is bound with alternate leaves blank, for the convenient entry of memoranda in connection with the subjects on the opposite pages. The volume contains in a condensed and practical form the general facts and principles of dental pathology and therapeutics as taught by Prof. Flagg. The systematic arrangement of subjects, and the terse presentation of theory and practice in the form of question and answer, make it convenient as a work of reference in office practice, and useful to the student as a resume of essential points in a college course. There are few who would fail to find more than the price of the book in its pages.

Tabulae Anatomic^ Osteology. Bditae a Carolo H. Von Klein, Artium Magistro Medicinarum Doctore. Editio Emendata. Cincinnati, O., U. S. A. Cincinnati Lithographic Co., 1885. This volume consists of illustrations of the bones composing the human skeleton, and, in minute detail, the Latin nomenclature. This is the one distinguishing feature of the volume—the presentation of the technology, in order, as the author says, that "medicine may have a uniform language in every quarter of the globe." For the purpose of enabling one to refer readily to the designation in Latin of any anatomical point, the book would prove convenient.

The Scientific Adaptation Of Artificial Dentures. By C. H.

Land. Detroit: Published by C. H. Land, 1885.

This is a little volume of forty-four pages, giving in fourteen chapters brief instruction on the principles of adapting artificial dentures to the mouth. Sixteen pages are devoted to hints for the

laboratory.

Pamphlets Keceived.

Letters from a Mother to a Mother on the Formation, Growth, and Care of the Teeth. By the Wife of a Dentist, "Mrs. M. W. J.," hon