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130, passed by. And the history of all these countries, whether east or west, is brought down to date. Even our recent war with Spain is briefly told. Indeed, the value of the book as a work of reference lies in the fact that it encompasses all the world's history, giving in compact, handy form the chief data in the progress of the human race, that otherwise must be sought for in a dozen different places. Another valuable feature of the book, attainable only on the plan of rigid selection of salient points, is the connection between the different peoples. Their interdependence, the sequence of their appearance on the stage of action, and their decline, are most vividly realized in such a bird's-eye view. The book has maps and a full index.

The essays comprised in Mr. William M. Bryant's volume entitled Life, Death, and Immortality, and Kindred Essays have developed, as he expresses it, one by one during a number of years past. The term developed is a happy one, for the papers were certainly not made to order, but read like results of systematic, continuous thinking. They concern the religious aspect of human nature. The author thinks that negative criticism has for the time being exhausted its resources, and the time has come for further positive interpretation of the fundamental conceptions of the Christian doctrine as to man's nature and destiny. A reference to a few of the points in the first essay, which gives the title to the book, will afford a view of the author's method. Men of science are constantly insisting that the total quantity of energy is changeless, and nothing can be added to it and nothing taken away. What are the "total quantity of energy" and the "great first cause" but the same, to the activity of which is due every phase of reality? This being changeless, it could not at some period "have created a world and afterward left it to spin on of its own accord 'without interference.'" Mind is a form of energy, consequently indestructible and undying, and the question of immortality is reduced to the form "whether in respect of man's essential nature as a thinking unit, death can ever be more than transition from one to another grade of life." Other essays are on Oriental Religions, Church Organization, The Heresy of Non-Progressive Orthodoxy, Christian Ethics and those of other religions, and Eternity.

Professor Merriman's Elements of Sanitary Engineering is a thoroughly practical treatise setting forth the principal rules and laws relating to sanitation, both individual and municipal, as it is practiced to-day. A brief historical introduction is followed by a classification of diseases, and a general consideration of such questions as filth and disease, impure air and disease, drinking water and disease, etc. The second chapter takes up the question of the purification of water. Chapter III discusses the practical aspects, for a municipality, of water-supply systems. Consumption of water, capacity of storage reservoirs, pipe lines, pumping engines, tanks and stand pipes and street mains are among the special headings. Sewerage systems are next dealt with. A discussion of questions connected with the disposal of garbage and sewage forms the fifth and last chapter of the book. An item which adds value to the volume is the series of exercises and problems, practically applying the laws set forth, which follows each chapter.

An Epitome of Human Histology has been written by Mr. Weysse to meet the difficulty in which the conscientious student of microscopic anatomy is placed who finds himself in possession of a great many isolated facts about the minute structure of the body, but with rather an indefinite conception of the relation of those facts to one another and of the subject as a whole. In the writing the author has sought to present all the facts that are of real importance to the student; to express them in the briefest and clearest language, omitting whatever is not strictly required: and to arrange them in such