An introduction to natural philosophy : designed as a text book, for the use of the students in Yale College, compiled from various authoritie

Front matter

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Introduction

DKflOIIBD If

A TEXT BOOK,

THE USE OF THE STUDENTS

IN

YALE CX>LLB6E.

BT DENISON ^J!ISTED« LLB.,

STBRBOTTPS BDITIOH.

NEW YORK: PUBLISHED BY ROBERT B. CX)LLINS,

2M PEARL-STREET.

Kntered, according to Act of Congress, in the year 1814, Of

DtNXaON DUISTID,

In the Clerk's OiBee of the District Court of Connectic«C

ADVERTISEMENT TO THE FIFTH EDITION

The publishers of this work have hitherto forborne to stereotype it, in order that the author might more conveniently make such alterations and correctioDs, in the successive editions, ad his own studies, and the communications of his scientific friends who use the work as a text-book, might suggest. Of these means of improvement, he has diligently and carefully availed himself; and having now brought the work to the highest degree of improvement and accuracy that seems at present attainable by him, he has consented that it should be stereotyped, without contemplating any further changes for some time to come.

The more economical mode of publishing thus secured ; the adoption of a style of printing somewhat more compact, while it is equally legible, thus rendering it convenient to reduce the two volumes to one ; and, above all, the extensive and increasing demand, have enabled the publishers materially to reduce the price of the work, in conformity with what is believed to be the general wish of the numerous literary institutions tliat use it as a text-bo6k« ,

AlthQugh som^ passages found in former editions have been omitted in the present, yet others deemed of greater value have been added, so that the amount of matter in the present form has not been diminished, but rather increased.

From many of his brethren of other Colleges, the author has received corrections and suggestions, for which he is indebted in no small degree for the more improved and accurate state of the work as now published. To all of them he would express his grateful acknowledgments. To Professor Loomis and Professor Snell, he is under peculiar obligations.

To.blend practical utility with scientific accuracy, was originally, and still continues to be, the aim of this work — a plan which secures to thft scholar, along with the discipline of the understanding, habits of philosophical reasoning and observation on the phenomena of nature and art, and information which may be made available in the practical business of life.

Yale Coixbob, Mav, 1844