NOW COMPLETE.

A SERIES OF TEXT-BOOKS ON PHYSICAL SC ENCE.

HANDBOOKS OF NATURAL PHILOSOPHY
AND ASTRONOMY.

BY DIONYSIUS LARDNER, D.C.L.,

Formerly Professor of Natural Philosophy and Astronomy in University College, London.

This valuable Series is now complete, consisting of three Courses, as follows:FIRST COURSE,

MECHANICS, HYDROSTATICS, HYDRAULICS, PNEUMATICS, SOUND,
AND OPTICS.

In one large royal 12mo. volume, of 750 pages, with 424 illustrations.
SECOND COURSE,

HEAT, MAGNETISM, COMMON ELECTRICITY, AND VOLTAIC
ELECTRICITY.

In one royal 12mo. volume, of 450 pages, with 244 illustrations,

THIRD COURSE,

ASTRONOMY AND METEOROLOGY,

In one very large royal 12mo volume, of nearly 800 pages, with 37 plates and over 200 illustrations.

These volumes can be had either separately or in uniform sets, containing ABOUT TWO THOUSAND PAGES, AND NEARLY ONE THOUSAND ILLUSTRATIONS ON STEEL AND WOOD.

To accommodate those who desire separate treatises on the leading departments of Natural Philosophy, the First Course may also be had, divided in three por tions, viz:

Part I. MECHANICS.-Part II. HYDROSTATICS, HYDRAULICS, PNEUMATICS,

and SOUND.-Part III. OPTICS.

It will thus be seen that this work furnishes either a complete course of lastruction on these subjects, or separate Treatises on all the different branches of Physical Science.

The object of the author has been to prepare a work suited equally for the collegiate, academical, and private student, who may desire to acquaint himself with the present state of science, in its most advanced condition, without pursuing it through its mathematical consequences and details. Great industry has been manifested throughout the work to elucidate the principles advanced, by their practical applications to the wants and purposes of civilized life; a task to which Dr. Lardner's immense and varied knowledge, and his singular felicity and clearness of illustration render him admirably fitted. This peculiarity of the work recommends it especially as the text-book for a practical age and country such as ours, as it interests the student's mind by showing him the utility of his studies, while it directs his attention to the further extension of that utility by the fulness of its examples. Its extensive adoption in many of our most distin guished colleges and seminaries is sufficient proof of the skill with which the author's intentions have been carried out.

LARDNER'S NATURAL PHILOSOPHY AND ASTRONOMY-Continued.

From Prof. Kirkwood, Delaware College, April 12, 1854.

After a careful examination, I am prepared to say that it is the most complete "Handbook of Astronomy" with which I am acquainted. I trust the demand for the work will be commensurate with its merits.

From Prof. A. Caswell, Brown University, April 29, 1854.

I regard it as a very useful and very convenient popular compend of the ser ences of which it treats. It is full of information, and well illustrated. It de serves a place among the best educational treatises on Astronomy and Phyrics.

From Prof. W. L. Brown, Oakland College, Miss., March 29, 1854.

I consider them most admirably suited for the purposes designed by the author indeed, as the very best popular works on Physical Science with which I am acquainted. The "Third Course," on Astronomy, is especially valuable; its magnificent engravings, and lucid explanations, make it a most desirable text book.

From Prof. R. Z. Mason, McKendree College, Ill.

In my judgment, it contains the best selection of compact demonstrations and popular illustrations that we have yet received on the subject. Dr. Lardner has relieved it somewhat from the dry details of Mathematics, and yet there is such a close adherence to severe methods of thought as to satisfy the most rigid and careful analyst.

From Rev. J. G. Ralston, Norristown, Pa., March 22, 1854.

Lardner's Meteorology and Astronomy is a fit companion for his First and Second Course. It is wonderfully minute, and yet not prolix. The principles of Astronomy are probably as clearly defined and judiciously arranged in this book as they can be. I expect to introduce it in my school.

From S. Schooler, Esq., Hanover Academy, Va., April 16, 1854.

The three volumes constitute a body of information and detail on nearly the whole range of Physical Science which is not to be found together in any other publication with which I am acquainted. I hope that these works may be the means of inducing many of our youth to devote themselves to the development of the Laws of Nature, and the application of them to industry, and that they may be the vehicle for conveying sound information and food for thought to every man who aspires to be well educated.

From M. Conant, State Normal School, Mass., April 11, 1854.

This is a treatise admirably adapted to its purpose. For the accurate knowledge it unfolds, and the very popular dress it appears in, I think I have met with nothing like it. I shall advise the students of the Normal School to add this to your edition of Lardner's Mechanics, &c.

From Prof. E. Everett, New Orleans, Feb. 25, 1854.

I am already acquainted with the merits of this book, having had occasion to consult it in teaching the branches of which it treats, and I cannot give you a stronger assurance of my high opinion of it than the simple fact that I have selected it as the text-book of Physics in the course of study which I have just Axed upon for a new college to be established here.

A COMPLETE COURSE OF NATURAL SCIENCE (Just Issued.)

THE BOOK OF NATURE;

AN ELEMENTARY INTRODUCTION TO THE SCIENCES OF

Physics, Astronomy, Chemistry, Mineralogy, Geology, Butany
Zoology, and Physiology.

BY FREDERICK SCHOEDLER, PH. D.,

Professor of the Natural Sciences at Worms.

FIRST AMERICAN EDITION,

With a Glossary, and other Additions and Improvements.

From the Second English Edition, translated from the Sixth German Edition,

BY HENRY MEDLOCK, F.C.S., &c.

Illustrated by six hundred and seventy-nine Engravings on Wood.

In one handsome volume, crown octavo, of about seven hundred large pages
extra cloth.

To accommodate those who desire to use the separate portions of this work, the
publishers have prepared an edition in parts, as follows, which may be had singly
by mail or otherwise, neatly done up in flexible cloth.

INTRODUCTION, GLOSSARY, INDEX, &c., 96 pages.

The necessity of some acquaintance with the Natural Sciences is now so uni-
versally admitted in all thorough education, while the circle of facts and prin-
ciples embraced in the study has enlarged so rapidly, that a compendious Manual
like the BOOK OF NATURE cannot fail to supply a want frequently felt and
expressed by a large and growing class.

The reputation of the present volume in England and Germany, where repeated
editions have been rapidly called for, is sufficient proof of the author's success in
condensing and popularizing the principles of his numerous subjects. The
publishers therefore would merely state that, in reproducing the work, they have
spared no pains to render it even better adapted to the American student. It has
been passed through the press under the care of a competent editor, who has cor
rected such errors as had escaped the attention of the English translator, and
has made whatever additions appeared necessary to bring it completely on a level
with the existing state of science. These will be found principally in the sections
on Botany and Geology; especially the latter, in which references have been
made to the numerous and systematic Government surveys of the several States,
and the whole adapted to the nomenclature and systems generally used in this
country. A copious Glossary has been appended, and numerous additional
-illustrations have been introduced wherever the elucidation of the text appeared
to render them desirable.

It is therefore confidently presented as an excellent Manual for the private
student, or as a complete and thorough Class-book for collegiate and academical

use.

THE BOOK OF NATURE-Continued.

Books which treat of everything too often remind us of patent medicines, that are advertised to cure all the maladies that human flesh is heir to. But the volume before us does not belong to that genus. It is not the production of a quack, but is a truly scientific manual, almost a library on Physical Sciences, yet perfectly convenient, and valuable to the student as a work of reference. Though the whole range of sciences is embraced in it, yet it affords a much more minute and ample fund of instruction in these various departments than do many treatisos which include only a single subject. Teachers will find it a valuable work for their libraries.-N. Y. Student.

Composed by the same distinguished author, all the departments have a uni formity of style and illustration which harmoniously link the entire circle together. The utility of such a connected view of the physical sciences, and on ach an approved basis, is beyond price; and places their acquisition within the reach of a vastly increased number of inquirers. Not only to such is it valuable, but to those who wish to have at hand the means of refreshing their memories and enlarging their views upon their favorite studies. Of such a book we speak Cordially, and would speak more at length, if space permitted. Southern Mo thodist Quarterly Review.

From Prof. Johnston, Wesleyan University, Ct., March 14, 1854.

I do not know of another book in which so much that is important on these subjects can be found in the same space.

From Prof. Allen, Oberlin Institute, Ohio, April 1, 1854.

As a work for popular instruction in the Natural and Physical Sciences, it cer tainly is unrivalled, so far as my knowledge extends. It admirably combines perspicuity with brevity; while an excellent judgment and a rare discrimination are manifest in the selection and arrangement of topics, as well as in the description of objects, the illustration of phenomena and the statement of principles. A more careful perusal of those departments of the work to which my studies have been particularly directed has been abundantly sufficient to satisfy me of its entire reliableness-that the object of the author was not so much to amuse as really to instruct.

From Prof. Pearson, Union College, N. Y., Feb. 22, 1854.

It seems to be a book well adapted to imparting an elementary knowledge of Physics and Natural History to students of our Academies and Colleges.

From Prof. J. A. Spencer, N. Y.

I am delighted with Dr. Schoedler's "Book of Nature;" its tone of healthful piety and reverence for God's word add a charm to the learning and deep research which the volume everywhere manifests.

From W. J. Clark, Esq., Georgetown Female Seminary, D C.

As far as I have examined, it has afforded me great pleasure. It is the most valuable compendium of the subjects of which it treats with which I have ever met.

From W. H. Allen, President of Girard College, Philadelphia.

Though a very comprehensive book, it contains about as much of the details of natural science as general students in this country have time to study in regular academical course; and I am so well pleased with it, that I shall recom mend its use as a text-book in this institution.

NEW AND MUCH IMPROVED EDITION-(Lately Issued.)

PHYSICAL GEOGRAPHY

BY MARY SOMERVILLE.

A New American, from the Third and Revised London Edition.
WITH NOTES AND A GLOSSARY,

BY W. S. W. RUSCHENBERGER, M.D., U. S. NAVY.

In one large royal 12mo. volume, of nearly six hundred pages.

The subject of Physical Geography is one of which the acknowledged importano is rapidly forcing its introduction into all systems of education which pretend to keep themselves on a level with the improvements and requirements of the age. It is no longer considered sufficient to drill the scholar into a mechanical knowledge of the names of rivers and mountains, and the territorial divisions of the earth's surface. A want is now felt of an acquaintance with the structure of the globe, externally and internally, and of the causes and effects of the variations of land and water, forest and desert, heat and cold, tides, currents, rain, wind, and all the other physical phenomena occurring around us, which have so direct and immense an influence upon the human race. This is all summed up in "Physical Geography," which may be regarded as the résumé of all that is known on the natural history and present state of the earth and its inhabitants - the practical application of the principles of which are elucidated by the minute inves tigations of the scientific observer. This vast and interesting subject has been successfully grappled by Mrs. Somerville, who in the present volume has set forth, in a picturesque and vivid style, a popular yet condensed account of the globe, in its relations with the Solar System; its geological forces; its configuration and divisions into land and water, mountain, plain, river, and lake; its meteorology, inineral productions, vegetation, and animal life; estimating and analyzing the causes at work, and their influence on plants, animals, and mankind. A study such as this, taken in conjunction with ordinary political geography, lends to the latter an interest foreign to the mere catalogue of names and boundaries, and, in addition to the vast amount of important information imparted, tends to impress the whole more strongly on the mind of the student.

Eulogy is unnecessary with regard to a work like the present, which has passed through three editions on each side of the Atlantic within the space of a few years. The publishers therefore only consider it necessary to state that the last London edition received a thorough revision at the hands of the author, who introduced whatever improvements and corrections the advance of science rendered desirable; and that the present issue, in addition to this, has had a careful examination on the part of the editor, to adapt it more especially to this country. Great care has been exercised, in both the text and the Glossary, to obtain the accuracy so essential to a work of this nature; and in its present improved and enlarged state, with no corresponding increase of price, it is confidently presented as in every way worthy a continuation of the striking favor with which it has been every where received.

From Lieutenant Maury, U. S. N.

.

National Observatory, Washington.

I thank you for the "Physical Geography;" it is capital. I have been reading it, and like it so much that I have made it a school-book for my children, whom I am teaching. There is, in my opinion, no work upon that interesting subject on which it treats-Physical Geography-that would make a better text-book in our schools and colleges. I hope it will be adopted as such generally, fcr you have Americanized it, and improved it in other respects.

From Samuel H. Taylor, Esq., Philips' Academy, Andover, Mass., Feb. 15, 1854. We have introduced your edition of Mrs. Somerville's "Physical Geography" inte our school, and find it an admirable work.