Elements of Chemistry. Adapted to the present state of the The Young Botanist. New edition, Elements of Botany. Including Vegetable Physiology, and a Outlines of Physiology, both Comparative and Human. To New Elements of Geology, Highly Illustrated, Natural History of Beasts. Ditto. Natural History of Birds and Beasts. Ditto. Cloth, 1 00 0 50 1 25 0 80 1 25 075 0 50 All the above works are fully illustrated by elegant cuts. The Philosophy has been republished in Scotland, and translated for the use of schools in Prussia. The many valuable additions to the work by its transatlantic Editors, Prof. Lees, of Edinburgh, and Prof. Hoblyn, of Oxford, have been embraced by the author in his last revision. The Chemistry has been entirely revised, and contains all the late discoveries, together with methods of analyzing minerals and metals. Portions of the series are in course of publication in London. Such testimony, in addition to the general good testimony of teachers in this country, is sufficient to warrant us in saying that no works on similar subjects can equal them, or have ever been so extensively used. It is a remarkable fact, that when interested persons have attacked these works, and succeeded in getting in their own, a little time has dissipated the mist, and they have found their way back again. A new edition of the Botany, with an enlarged Flora, is just ready. The sale of 500,000 copies of the Philosophy would seem to render notices superfluous. Human Physiology.-($1 25.) Designed for Colleges and the Higher Classes in Schools, and for General Reading. BY WORTHINGTON HOOKER, M. D., Professor of the Theory and Practice of Medicine in Yale College. Illustrated with nearly 200 Engravings. This is an original work and not a compilation. It presents the subject in a new light, and at the same time embraces all that is valuable for its purpose, that could be drawn from the most eminent sources. The highest encomiums are received from all quarters; a few are subjoined. Hooker's Physiology was duly received. We propose to adopt it as a text-book, and shall order in the course of a fortnight. Alexandria High School, Va. CALEB J. HALLOWELL. We can truly say that we believe this volume is of great value, and we hope that the rare merits of the diligent author will be both appreciated and patronized. Boston Medical and Surgical Journal. Dr. Hooker writes with perspicuity, explains difficult points with simplicity, and adapts the subject well to school instruction and general reading. American Journal of Science and Arts. Here is the remedy for a want which is so evidently a want, and that now we have it supplied, it seems an absurdity to have lived on wanting it. The present work is a popular treatise, attractive enough to be read, and with compass enough to allow the author's fertility of illustrative anecdote to come into play. There is no need of commending the work to the attention of a community where Dr. Hooker is so well known as he is among us. Norwich Courier. I am ready to pronounce it unqualifiedly the most admirable book or work on the human system that has fallen under my notice, and they have not been few. If any one desires a complete and thorough elucidation of the great science discussed, they can nowhere be better satisfied than in the perusal of Dr. Hooker's most excellent work. B. F. TEWKSBURY, Lenoxville, Pa. AN INTRODUCTORY WORK ON HUMAN PHYSIOLOGY, by Prof. HOOKER, is in press. Elements of Meteorology.-($0 75.) Designed for Schools and Academies. By JOHN BROCKELSBY, A.M., Professor of Mathematics and Natural Philosophy in Trinity College, Hartford. The subject of Meteorology is of the deepest interest to all. Its phenomena every where surround us, and ought to be as familiarly known by the scholar as his arithmetic or philosophy. This work treats on "Winds in General, Hurricanes, Tornadoes, Water Spouts, Rain, Fogs, Clouds, Dew, Snow, Hail, Thunder-storms, Rainbow, Haloes, Meteorites, Northern Lights, &c. TESTIMONIALS. From Denison Olmsted, LL. D., President of Yale College. "I have perused your work on Meteorology, which you were so kind as to send me, and am much pleased with the manner in which you have treated these subjects; the selection of topics being in my view judicious, and the style luminous, and well adapted to readers of every age, whether learned or unlearned. 66 'I should rejoice to see such a school-book introduced into all our schools and academies. No natural science is more instructive, more attractive, and more practically useful, than Meteorology, treated as you have treated it, where the philosophical explanations of the various phenomena of the atmosphere are founded upon an extensive induction of facts. This science is more particularly interesting to the young, because it explains so many things, that are daily occurring around them, and it thus inspires a taste for philosophical reasoning. I think the work cannot fail to be well received as a valuable addition to our list of textbooks. From J. L. Comstock, M. D., Author of Natural Philosophy, Chemistry, Botany, Geology, Mineralogy, and Physiology. "Professor Brocklesby, of Trinity College, has submitted to my perusal a Treatise on Meteorology,' written by himself, and with the arrangement and science of which I am much pleased. The Professor wishes to have his treatise published as a school-book, and, considering the interest which the several subjects it embraces excites in the minds of all, both old and young, rich and poor, I see not why such a book, when once introduced, should not have a large circulation. I see no reason why Meteorology, in many respects, has not as many claims as a school-book as Chemistry or Natural Philosophy. Indeed, I should like to see Pro fessor B.'s book introduced into schools as a companion of my Philosophy." Recommended also by BENJ. SILLIMAN, LL. D. This work has proved highly satisfactory in the school-room; and is now the established text-book in a very large number of our best high schools and academies, where the natural sciences are taught VIEWS OF THE MICROSCOPIC WORLD.—($1 12.) Designed for General Reading, and as a Hand-book for Classes in Natural Sciences. By Prof. BROCKLESBY. By the aid of a powerful microscope, the author has given us highly instructive accounts of Infusorial Animalcules, Fossil Infusoria, Minute Aquatic Animals, Structure of Wood and Herbs, Crystallization, parts of Insects, &c., &c. To those who are necessarily deprived of the aid of a microscope, and even to those who have it, this is a most valuable work. It is clearly and pleasantly written. The sections on the Animalcules, Infusoria, and Crystallizations, are very beautifully illustrated with large and expensive plates. The decriptions of the different kinds of these wonderful little animals, many of which multiply by millions in a few hours, are really very instructive. There is no better school library book in the world. It should be read by every man, woman, and child. PROF. BROCKLESBY'S ASTRONOMY.—($1 25.) This work is printed in the first style of the art, being amply illustrated; and the approval bestowed upon it by the most competent judges is such as to entitle it to the careful examination of teachers. It is believed these works excel all others, for the following reasons: 1. The clearness and correctness of definitions. 2. The gradual arrangement of subjects. 3. Unity of design marks the series. 4. The use of initial letters only. 5. The fact that children delight in them. 6. Their cheapness. The attention of teachers, whose range of subjects includes geography, is respectfully and particularly called to Mr. Olney's Geographical Works. These works, more especially the School Geography and Atlas, have been in use for several years, and so far as the publishers have been able to ascertain, it is the general testi mony of teachers that the "Practical System of Modern Geography" is the best work for practical use that has ever appeared. But recent works have been put forth, claiming to be made upon superior principles, and modestly intimating that all previous standard works are so inferior in construction as to render them deservedly obsolete. Indeed it is claimed that there has been no advance in geographical text-books for many years, until suddenly a new Daniel has come to judgment. In looking carefully over the recent inprovements so boastfully claimed, we are unable to discover any which have not been substantially drawn from Olney's Geographies. Mr. Olney commenced the plan of simplifying the first lesson and teaching a child by what is familiar to the exclusion of astronomy. He commenced the plan of having only those things represented on the maps which the pupil was required to learn. He originated the system of classification, and of showing the government, religion, &c., by symbols. He first adopted the system of carrying the pupil over the earth by means of the Atlas. His works first contained cuts in which the dress, architecture, animals, internal improvements, &c., of each country are grouped, so as to be seen at one view. His works first contained the world as known to the ancients, as ar aid to Ancient History, and a synopsis of Physical Geography with maps. In short, we have seen no valuable feature in any geography which has not originally appeared in these works; and we think it not too much to claim that in many respects most other works are copies of these. We think that a fair and candid examination will show that Olney's Atlas is the largest, most systematic, and complete of any yet published, and that the Quarto and Modern School Geographies contain more matter, and that better arranged, than any similar works. The attention of teachers is again called to these works, and they are desired to test the claims here asserted. TESTIMONIALS. From President HUMPHREYS, D. D., Amherst College. Mr. J. OLNEY.-Dear Sir, I have examined both your improved School Atlas and Modern System of Geography with more than ordinary satisfaction. Your arrangement of topics appears to me better adapted to the comprehension of the child, and to follow more closely the order of nature, than any other elementary system of the kind with which I am acquainted. Instead of having to encounter the diagrams, problems, and definitions of Astromony as soon as he opens his Geography, the young learner is first presented with the elements of the science in their simplest and most attractive forms. His curiosity is of course awakened. That which would otherwise be regarded as an irksome task, is contem |