Ο MANUAL OF CHEMISTRY, CONTAINING THE PRINCIPAL FACTS OF THE SCIENCE, IN THE ORDER IN WHICH THEY ARE DISCUSSED AND ILLUSTRATED IN THE LECTURES AT HARVARD UNIVERSITY, N. E. AND SEVERAL OTHER COLLEGES AND MEDICAL SCHOOLS IN THE UNITED STATES. COMPILED AND ARRANGED AS A TEXT BOOK FOR THE USE OF STUDENTS, AND PERSONS ATTENDING LECTURES ON CHEMISTRY. THIRD EDITION, COMPRISING A SUMMARY OF THE LATEST DISCOVERIES AS CONTAINED IN THE WORKS OF BY JOHN W. WEBSTER, M. D. ERVING PROFESSOR OF CHEMISTRY AND MINERALOGY IN HARVARD UNIVERSITY. BOSTON: PUBLISHED BY MARSH, CAPEN, LYON AND WEBB. 1839. Entered according to Act of Congress, in the year 1839, BY MARSH, CAPEN, LYON AND WEBB, In the Clerk's Office of the District Court of Massachusetts. TUTTLE, DENNETT AND CHISHOLM'S POWER PRESS, No. 17 School Street, Boston. ADVERTISEMENT TO THE THIRD EDITION. THE two former editions of this work were based upon the excellent Manual of Professor Brande, but the progress of chemical science bas rendered it necessary to deviate so much from his arrangement, that in the present edition it has been entirely remodelled. In several institutions, where this work had been in use as a text book, it became necessary to seek for some other, in consequence of its having become out of print. Several editions of Dr Turner's Elements of Chemistry having appeared in this country, under the able supervision of a gentleman eminent for his scientific attainments, that work was adopted in many institutions. As Dr Turner's work was not so practical and elementary as was desirable, a new edition of it, calculated to meet the wants of beginners, was commenced by the compiler of this, but was subsequently relinquished on learning that Professor Bache was preparing a new edition of the former. In August, 1838, a part of this new edition was published, since that time no more of it has appeared. The delay was attributed to the decease of the author, but it was soon after announced that the publication of the sixth edition of the Elements would be continued by the brother of Dr Turner and Professor Liebig. A portion of their joint work appeared in London, a part of which was republished in this country, and a few pages followed in England on organic chemistry. More than a year has elapsed and no more has been published. Under these circumstances, and at the repeated request of gentlemen connected with various colleges, a new edition of this Manual was commenced and has been completed, in which is incorporated much of the most important elementary part of Turner and Liebig's work. It was deemed advisable to reduce the size of the work, and to embody more practical details and more copious experimental illustrations, than are generally given in the larger works. This edition has therefore been compiled from the volumes of Turner, Brande, Faraday, Liebig, Thomson, and others, and as an introduction to them, with no more alteration than was required to preserve uniformity and connexion.* The frequent references and designation of the writers' Numerous errors (probably of the press) in the English edition of Turner and Liebig's work have been corrected. |