Knapp's Chemical Technology

TECHN0L0GY;

OR, CHEMISTRY APPLIED TO THE ARTS AND TO MANUFACTURES BY DR. F. KNAPP,

Professor at the University of Giessen.

Edited, with numerous Notes and Additions, by

DR. EDMUND RONALDS, and DR. THOMAS RICHARDSON.

First American Edition, with Notes and Additions,

BY PROFESSOR WALTER R. JOHNSON.

In two handsome octavo volumes, printed and illustrated in the highest style of art.

Volume One, lately published, with two hundred and fourteen large wood engravings. Volume Two, now ready, with two hundred and fifty wood engravings.

One of the best works of modern times. - New York Commercial.

We think it will prove the most popular, as it is decidedly the best of the series. Written by one who has for many years studied both theoretically and practically the processes which he describes, the descriptions are precise, and conveyed in a simple unpretending style, so that they are easily understood, while they are sufficiently full in detail to include within them everything necessary to the entire comprehension of the operations. The work is also carefully brought down to include the most recent improvements introduced upon the continent of Europe, and thus gives us full descriptions of processes to which reference is frequently made in other works, while many of them are, we believe, now for the first time presented in a complete state to the English reader. - Franklin Institute Journal.

Weisbach's Mechanics

PRINCIPLES OF THE MECHANICS

OF MACHINERY AND ENGINEERING,

By Professor JULIUS WEISBACH.

TRANSLATED AND EDITED

BY PROFESSOR GORDON, OF GLASGOW.

First American Edition, with Additions,

By Prof. WALTER R. JOHNSON.

In two Octavo Volumes, beautifully printed.

Volume One, with five hundred and fifty illustrations, just issued. Volume Two, with three hundred and thirty illustrations, now ready.

This work is one of the most interesting to mathematicians that has been laid before us for some time; and we may safely term it a scientific gem. - The Builder

The most valuable contribution to practical science that has yet appeared in this country. - Athenoeum.

In every way worthy of being recommended to our readers - Franklin Institute Journal.

From Charles H. Haswell, Esq., Engineer in Chief, U. S. N.

The design of the author in supplying the instructor with a guide for teaching, and the student with an auxiliary for the acquirement of the science of mechanics, has, in my opinion, been attained in a most successful manner. The illustrations, in the fullness of their construction, and in typographical execution, are without a parallel. It will afford me much pleasure to recommend its use by the members of the profession with which I am connected.

Schmitz & Zumpt's Classical Series

Volume I

C. JULII CAESARIS

COMMENTARII DE BELLO GALLICO.

WITH AN INTRODUCTION, NOTES, AND A GEOGRAPHICAL INDEX IN ENGLISH.

ALSO, A MAP OF GAUL, AND ILLUSTRATIVE ENGRAVINGS. In one handsome 18mo. volume, of 232 pages, extra cloth, price 50 ets.

Volume II

PUBLII VIRGILII MARONIS CARMINA.

WITH AN INTRODUCTION AND NOTES. In one handsome 18mo. volume, of 438 pages, extra cloth, price 75 ets.

Volume III

C. CRISPI SALLUSTII CATALINA ET JUGURTHA.

WITH INTRODUCTION, AND NOTES IN ENGLISH.

ALSO, A MAP OF NUMIDIA AND OTHER ILLUSTRATIVE ENGRAVINGS.

In one handsome 18mo. volume, of 169 pages, extra cloth, price 50 ets. VOLUME IV. - Now Ready.