CHEMICAL ATLAS;

OR, THE CHEMISTRY OF FAMILIAR OBJECTS:

Exhibiting the general principles of the science in a series of beautifully colored diagrams, and accompanied by explanatory essays, embracing the latest views of the subjects illustrated. Designed for the use of students in all schools where chemistry is taught. BY EDWARD L. YOUMANS.

Large Quarto. 105 Pages. $2.

The Atlas is intended to accompany the author's Class-Book; but it may be employed with equal convenience and advantage in connection with any of the school text-books. It is to be used in exactly the same manner as a geographical atlas. As the pupil proceeds with the work in hand, whatever it may be, reference should be made to the diagrams as often as the subject may require. For example; when combining proportions, salts, com bustion, or compound-radicals are reached, the plates which illustrate these subjects will be resorted to for assistance by those who possess the work. The text contains not only full explanations of the diagrams, but it consists of a series of essays or chapters upon the subjects illustrated.

The following expressions of opinion concerning the plan of illustrating Chemistry adopted in the present volume, are from the most eminent teachers and scientific men in the country. It will be seen that the testimonials refer to the Author's "Chemical Chart; " but as the "Atlas" is a reproduction and improvement of that mode of exhibiting chemical facts and phenomena, the commendations apply to this work with much greater force.

From the HON. HORACE MANN, President of Antioch College.

"I think Mr. Youmans is entitled to great credit for the preparation of his Chart, because its use will not only facilitate acquisition, but, what is of far greater importance, will increase the exactness and precision of the studant's elementary ideas."

From DR. JOHN W. DRAPER, Professor of Chemistry in the University of New York.

"It seems well adapted to communicate to beginners a knowledge of the definite combinations of chemical substances, and deserves to be introduced into the schools."

"We cordially concur in the above opinion."

"JOHN TORREY, "Professor of Chemistry in the College of Physicians and Surgeons, New York.
"WM. H. ELLET, "Late Professor of Chemistry in Columbia College, S. C."

From JAMES R. CHILTON, M. D., Chemist.

"It is a valuable means of readily imparting a correct knowledge of the nature of chemical combinations."

From DR. THOMAS ANTISELL, Professor of Chemistry in the Vermont Medical College.

"It will be found an invaluable assistant to both teacher and pupil.”

From PROF. GRAY, Author of text-books in Natural Philosophy and Chemistry. "The best means of illustration that I have seen; it would be especially useful to institutions not furnished with chemical apparatus.

From DR. ROBERT HARE, Emeritus Professor of Chemistry in the University of Pennsylvania "The design is excellent, and I entertain the impression that it is well done."

From Professor W. F. HOPKINS, of the U. S. Naval Academy, Annapolis,

"The plan is admirably adapted to assist the teacher in communicating, and the learner in receiving correct notions of the laws of chemical combinations. I commend it to the patronage of schools and academies."

From Rt. Rev. ALONZO POTTER, LL. D., Philadelphia.

"The conception embodied in Mr. Youmans' Chemical Chart is a very happy and useful one, and the execution is evidently the fruit of much care and skill. I should think its introduction into schools in connection with the study of the first principles of chemistry was much to be desired."

From BENJAMIN SILLIMAN, LL. D., Professor of Chemistry in Yale College.

The plan appears to be an excellent one."

If

THE CHILD'S FIRST HISTORY OF ROME.

BY MISS E. M. SEWELL.

18mo. Price 50 Cents.

In the preparation of this work for the use of children, the authoress has drawn her material from the most reliable sources, and incorporated them into a narrative at once unostentatious, perspicuous, and graphic, aiming to be understood by those for whom she wrote, and to impress deeply and permanently on their minds the historical facts contained in the book. The entire work is clothed in a style at once pleasing and comprehensible to the juvenile mind.

"The author of this work has been very successful in her style of narration, as well as gone to the best sources accessible for her facts. While there is nothing light and trivial in her manner, there is all the vivacity of the most lively fire-side story-teller; and those things, "of which it is a shame to speak," she gets over with great judgment, delicacy and tact. While it is eminently a child's book, we greatly misjudge if it should not prove a favorite with adults, especially that class who cannot command time to read protracted histories."-Christian Mirror.

A FIRST HISTORY OF GREECE.

BY MISS E. M. SEWELL.

18mo. Price 63 Cents.

This work is designed to impart to young people a more clear and understandable knowledge of Grecian history than is attainable through any of the numerous works on that subject that have been accumulating during the last century. By selecting and presenting clearly and concisely only prominent characters and events, and not overloading and rendering their perusal irksome by a mass of minor details, the authoress has rendered an essential service to the youth of our country. With a view of lessening the perplexity which young minds encounter in the study of the History of Greece, in consequence of its involving events connected with numerous small states, the names of the most part of which are new to them, the authoress has appended a chapter containing the names of the Grecian States and the chief places connected with them.

"Miss Sewell is eminently successful in this attempt to set forth the history of Greece in a manner suited to the instruction of the young. The chronology is lucid, the events are well selected, and the narrative is perspicuous and simple. The facts and the method of prosecuting them are taken mainly from the work of Bishop Thirlwall, an excellent authority, and the work as a whole is the best with which we are acquainted for the use of children in their lessons of Grecian History, whether in the school room or the family circle."-Providence Journal.

"She has faithfully condensed her subject, from the Siege of Troy, B. c. 1184, to the destruction of Corinth, and the annexation of Greece, as a province to the Roman Empire, B. c. 141; forming a most excellent outline, to be filled up by the future acquisition of the reader. The chronological table of contemporary events attached is a valuable addition.”—Cincinnati Daily Times.

CLASS-BOOK OF ZOOLOGY.

BY PROF. B. JAEGER.

18mo. Price 42 Cents.

This work is designed to afford to pupils in common schools and academies a knowledge of the Animal Kingdom, not by making it a tiresome study, overloaded with incomprehensible technical terms taken from Latin and Greek, but as a scientific, amusing, instructive, and useful occupation for the juvenile mind, imparting a taste for collecting and preserving zoological specimens, and furnishing subjects for interesting conversation.

FIRST LESSONS IN BOOK-KEEPING,

SINGLE AND DOUBLE ENTRY.

BY JOSEPH H. PALMER, A. M.

12mo. Price 19 Cents.

This little volume is progressively and logically arranged; each principle is clearly set forth by itsef and illustrated, 1st, by "Slate Exercises," and 2d, by "Blank-Book Exercises." The practice is thoroughly taught by numerous exercises, in which the pupil opens the accounts and conducts and closes them himself.

BLANKS ACCOMPANYING THE SAME. 19 cents.

From Jos. MCKEEN, Supt. of Schools of the City of New York.

"The arrangement of this work admirably combines the scientific and practical in a system of instruction which appears to be happily matured. It is well considered, and has in it more of original adaptation than is to be ordinarily met with in works upon this subject. I recommend it to the favor of business men and teachers of Book-keeping." New York Free Academy.

"DEAR SIR,

"It gives us pleasure to recommend your Treatise on Book-Keeping, and First Lessons introductory thereto, as admirably adapted to excite interest and secure proficiency in this important branch of practical education. We doubt not that your whole course furnishes a better aid in this department of study than can elsewhere be found.

“J. J. OWEN, D. D., Prof. of the Greek and Latin Languages, and Literature.

G. B. DOCHARTY, LL.D., Prof. of Mathematics.

J. T. BENEDICT, A. M., Prof Civil Engineering.

J. GRAEFF BARTON, A. M., Prof of English Language and Literature."

PRIMARY MENTAL ARITHMETIC;

OR, THE ARABIC ARITHMETICAL ALPHABET, AND THE ELEMENTARY NUMERI CAL TABLES.

Designed to make beginners in Arithmetic rapid and correct operators in the notation, numeration, addition, subtraction, multiplication, and division of small, simple numbers, compound numbers and common fractions: containing, generally, in the same lesson, on the same page, concrete and abstract numbers, a common table improved, an outline table, a test table, slate exercises, etc.

BY W. W. NEWMAN.
12mo. 84 pages. 19 Cents.

FIRST LESSONS IN GEOMETRY.

BY ALPHEUS CROSBY.

18mo. Price 38 Cents.

This little mathematical volume is founded upon the model of "First Lessons in Arithmetic," and abounds in illustrative questions both general and numerical, being an attempt to take advantage of their juvenile conceptions of place, form, and magnitude which the youthful mind conceives most easily and readily, and to give to them a scientific form and make them the foundation of elevated and accurate attainments-thus rendering Geometrical truths simpler and plainer, and bringing them within the reach of young childrer without sacrificing any of that strictness of demonstration which is the peculiar beauty of this science. That the author has been eminently practical and successful in this attempt will be seen by reference to the book.

ARITHMETICAL SERIES.

BY GEO. R. PERKINS, LL. D.

PRIMARY ARITHMETIC. 18mo. 160 pages. Price 21 Cents.

This work is in two parts. 1st, Intellectual Arithmetic, and 2d, Primary Written Arith metic. It will be found to contain Mental Exercises enough to train, yet not enough to overburden the mind.

A minute analysis and illustration of Numeration.

A familiar treatment of the ground rules, including an education of the eye to quick combinations of the written digits.

An informal and extended explanation of the principles of Decimals, in connection with exercises in Federal Money.

Each lesson reviews the principles of the preceding one, yet in modes so varied, as to prevent the possibility of rote-learning.

ELEMENTARY ARITHMETIC. 16mo. 350 pages. Price 42 Cents.

This work is peculiarly adapted to discipline the minds of those who study it.

No principle is left unelucidated, and new light is thrown upon many heretofore imperfectly illustrated.

The subject of Fractions, of Decimals, of Interest, of Partial Payments, etc., will, in their perspicuousness and their thoroughness, commend themselves to the examiner.

The subject of Proportion and Ratio is presented with peculiar force; as also, in Equation of Payments, the method of finding the Cash Balance.

The method of Extraction of the Cube Root is greatly preferable to the old method. It is far more concise and more comprehensive; saving nearly half the labor, and being applicable, with little variation, to the extraction of all roots. The new method is fully and beautifully explained in this work.

PRACTICAL ARITHMETIC. 12mo. Cloth sides. Price 62 Cents.

This is designed for the use of such institutions as require more examples than are given in the Elementary Arithmetic, the number herein contained being about 4000. The almost universal expression of those who have used it is, that "It is the best and most complete Arithmetic published."

Complete KEY to above, 12mo., 324 pp. 75 cents. (Just published.)

HIGHER ARITHMETIC. 12mo. Sheep. Price 75 Cents.

This work is what its name purports, and develops Arithmetical principles higher than are usually found in other school Arithmetics, and fully explains the science of numbers and their application.

From I. W. JACKSON, A. M., Professor of Mathematics in Union College.

"The Higher Arithmetic is a work of an order superior to any that has been issued from the American press. Indeed, I am acquainted with no work on Arithmetic in the English language equal to it. I am confident that Its general adoption as a Text-book, by our seminaries, would be considered by all who feel an interest in the promotion of the exact sciences, as an omen of good."

From PROF. Coox and DE. CAMPBELL, of Albany Academy.

From all who have used the Elementary Arithmetic here, both teachers and scholars, we hear but one opinion, and that is most favorable. It is an excellent text-book, and we have no hesitation in recommending it to parents and pupils."

From J. WATSON WILLIAMS, Clerk of Board of School Commissioners of City of Utica. "This will certify that Perkins' Elementary and Higher Arithmetics have been adopted by the Board of Behool Commissioners, as text-books to be used in the Public Schools of this city."

From T. M. RICE, Supt. of Schools, City of Buffalo.

"Perkins' Elementary and Practical Arithmetics are exclusively used in the Public Schools of this city with entire satisfaction to both teachers and pupils."

From H. B. HASWELL, Sec. of Board of Commissioners of Public Schools of the City of Albany. "Perkins' Primary and Elementary Arithmetics were unanimously adopted by the Board of School Commissioners of this city in the summer of 1851, and have since then been used to the exclusion of all others." In July, 1852, Perkins' Arithmetics were unanimously adopted for the use of all the Public Schools of New Orleans, From WM. HALL, Clerk of Board of Education, Syracuse.

At & special meeting of the Board, held the 23d of September, 1858, it was unanimously Resolved, That Perkins' Practical Arithmetic be substituted in the place of Greenleaf's National, in the Public Schools in this city."

From GEORGE P. WILLIAMS, Professor of Math, and Nat. Phil., University of Michigan. "After an examination of the last editions of these works, I am prepared to repeat the opinion formerly expressed, that they are the best Arithmetics in use, or accessible in this part of our country."

From A. H. LACKLEY, Beaver, Penn.

"Perkins' Arithmetics are books eminently suited to our course of instruction. We have tried them, and our pupils seem to think them another great evidence of the just popularity of Prof. Perkins. They have been pronounced superior to all others. We shall use them from this time forth."

From PROF. WALTER S. BOOTH, Southville, Conn.

"Perkins' works contain many excellent and new ideas-his 'Higher Arithmetic' is the best deserving of its title of any Higher Arithmetic in use."

From WILLIAM F. GOODWIN, New Bedford, formerly Principal of the Concord, N. H., High School "I have examined the Arithmetic with much interest, and, so far as I am capable of judging, regard it as a work of excellent merit, and think it deserves an introduction into our High Schools and Academies.

"The most of the arithmetics now in use are, I think, deficient in diagrams to illustrate geometrically the square and cube roots. Such, however, is not the case with 'Perkins' Practical Arithmetic.' Chapter XVI. takes up the subjects (Involution and Evolution) and treats them in a manner which must meet the hearty approval of the best mathematicians in the country."

From WM. L. EATON, Prof. of Mathematics, Branch of University, Kalamazoo, Mich.

"I have examined Prof. Perkins' Arithmetics, and like them much for their conciseness and comprehensiveness, as well as the practical nature of their examples. The Higher Arithmetie is, in my opinion, what it purports to be, a Higher Arithmetic, and such a one as all those who design to be thoroughly acquainted with the science of numbers, should be familiar with."

From the Chicago Daily Journal.

"We have a copy of the Elementary Arithmetic lying before us, which is worthy of the patronage of all friends of education. Whether in the author's clear and brief elucidation of first principles, his treatment of that old Golden Rule' of numbers, the Rule of Three, his disposition of Fractions, his explanation of the Square and Cube Root, (so often roots of bitterness to the young learner), his exercises in analysis, or his admirable arrangement of the whole, there is much to commend and but little to condemn, and it is not so much a matter of wonder that Prof. P. has produced such a work, as that some one had not long ago anticipated him.

"Another feature of this work, is the nature of the problems, made up as they are, in a great measure, of important statistics, and valuable facts in Philosophy and History, which are thus unconsciously learned in acquiring a knowledge of the Arithmetic."

From the Literary World of May 12, 1849.

This is by far the most scientific Elementary Arithmetic we have seen. There is a neatness of arrangement, a dispersion of matter, an accuracy and force of statement, which prepare the learner from the onset, for the handling of the higher mathematics.