Prof. W. D. WHITNEY, _Modern Linguistic Science._

Prof. C. A. YOUNG, Ph. D. (of Dartmouth College), _The Sun._

Prof. BERNSTEIN (University of Halle), _Physiology of the Senses._

Prof. FERDINAND COHN (Breslau University), _Thallophytes (Algaee, Lichens, Fungi)._

Prof. HERMANN (University of Zurich), _Respiration._

Prof. LEUCKART (University of Leipsic), _Outlines of Animal Organization._

Prof. LIEBREICH (University of Berlin), _Outlines of Toxicology._

Prof. KUNDT (University of Strasburg), _On Sound._

Prof. REES (University of Erlangen), _On Parasitic Plants._

Prof. STEINTHAL (University of Berlin), _Outlines of the Science of Language._

E. ALGLAVE (Professor of Const.i.tutional and Administrative Law at Douai, and of Political Economy at Lille), _The Primitive Elements of Political Const.i.tutions._

P. LORAIN (Professor of Medicine, Paris), _Modern Epidemics._

Prof. SCHuTZENBERGER (Director of the Chemical Laboratory at the Sorbonne), _On Fermentations._

Mons. DEBRAY, _Precious Metals._

_Opinions of the Press on the "International Scientific Series."_

I.

Tyndall's Forms of Water.

1 vol., 12mo. Cloth. Ill.u.s.trated Price, $1.50.

"In the volume now published, Professor Tyndall has presented a n.o.ble ill.u.s.tration of the acuteness and subtlety of his intellectual powers, the scope and insight of his scientific vision, his singular command of the appropriate language of exposition, and the peculiar vivacity and grace with which he unfolds the results of intricate scientific research."--_N. Y. Tribune_.

"The 'Forms of Water,' by Professor Tyndall, is an interesting and instructive little volume, admirably printed and ill.u.s.trated. Prepared expressly for this series, it is in some measure a guarantee of the excellence of the volumes that will follow, and an indication that the publishers will spare no pains to include in the series the freshest investigations of the best scientific minds."--_Boston Journal_.

"This series is admirably commenced by this little volume from the pen of Prof. Tyndall. A perfect master of his subject, he presents in a style easy and attractive his methods of investigation, and the results obtained, and gives to the reader a clear conception of all the wondrous transformations to which water is subjected."--_Churchman_.

II.

Bagehot's Physics and Politics.

1 vol., 12mo. Price, $1.50.

"If the 'International Scientific Series' proceeds as it has begun, it will more than fulfil the promise given to the reading public in its prospectus. The first volume, by Professor Tyndall, was a model of lucid and attractive scientific exposition; and now we have a second, by Mr. Walter Bagehot, which is not only very lucid and charming, but also original and suggestive in the highest degree. Nowhere since the publication of Sir Henry Maine's 'Ancient Law,' have we seen so many fruitful thoughts suggested in the course of a couple of hundred pages.... To do justice to Mr. Bagehot's fertile book, would require a long article. With the best of intentions, we are conscious of having given but a sorry account of it in these brief paragraphs. But we hope we have said enough to commend it to the attention of the thoughtful reader."--Prof. JOHN FISKE, in the _Atlantic Monthly_.

"Mr. Bagehot's style is clear and vigorous. We refrain from giving a fuller account of these suggestive essays, only because we are sure that our readers will find it worth their while to peruse the book for themselves; and we sincerely hope that the forthcoming parts of the 'International Scientific Series' will be as interesting."--_Athenaeum_.

"Mr. Bagehot discusses an immense variety of topics connected with the progress of societies and nations, and the development of their distinctive peculiarities; and his book shows an abundance of ingenious and original thought."--ALFRED RUSSELL WALLACE, in _Nature_.

III.

Foods.

By Dr. EDWARD SMITH.

1 vol., 12mo. Cloth Ill.u.s.trated. Price, $1.75.

In making up THE INTERNATIONAL SCIENTIFIC SERIES, Dr Edward Smith was selected as the ablest man in England to treat the important subject of Foods. His services were secured for the undertaking, and the little treatise he has produced shows that the choice of a writer on this subject was most fortunate, as the book is unquestionably the clearest and best-digested compend of the Science of Foods that has appeared in our language.

"The book contains a series of diagrams, displaying the effects of sleep and meals on pulsation and respiration, and of various kinds of food on respiration, which, as the results of Dr Smith's own experiments, possess a very high value. We have not far to go in this work for occasions of favorable criticism; they occur throughout, but are perhaps most apparent in those parts of the subject with which Dr. Smith's name is especially linked."--_London Examiner._

"The union of scientific and popular treatment in the composition of this work will afford an attraction to many readers who would have been indifferent to purely theoretical details.... Still his work abounds in information, much of which is of great value, and a part of which could not easily be obtained from other sources.

Its interest is decidedly enhanced for students who demand both clearness and exactness of statement, by the profusion of well executed woodcuts, diagrams, and tables, which accompany the volume.... The suggestions of the author on the use of tea and coffee, and of the various forms of alcohol, although perhaps not strictly of a novel character, are highly instructive, and form an interesting portion of the volume."--_N. Y. Tribune._

IV.

Body and Mind.

THE THEORIES OF THEIR RELATION.

By ALEXANDER BAIN, LL.D.

1 vol., 12mo. Cloth Price, $1.50.

PROFESSOR BAIN is the author of two well-known standard works upon the Science of Mind--"The Senses and the Intellect," and "The Emotions and the Will." He is one of the highest living authorities in the school which holds that there can be no sound or valid psychology unless the mind and the body are studied, as they exist, together.

"It contains a forcible statement of the connection between mind and body, studying their subtile interworkings by the light of the most recent physiological investigations. The summary in Chapter V., of the investigations of Dr. Lionel Beale of the embodiment of the intellectual functions in the cerebral system, will be found the freshest and most interesting part of his book. Prof. Bain's own theory of the connection between the mental and the bodily part in man is stated by himself to be as follows: There is 'one substance, with two sets of properties, two sides, the physical and the mental--a _double-faced unity_.'

While, in the strongest manner, a.s.serting the union of mind with brain, he yet denies 'the a.s.sociation of union _in place_,'

but a.s.serts the union of close succession in time,' holding that 'the same being is, by alternate fits, under extended and under unextended consciousness.'"--_Christian Register._

V.

The Study of Sociology.

By HERBERT SPENCER.

1 vol., 12mo. Cloth Price, $1.50.