11-20-35, HOST

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ADVERTISEMENT.

Of the course of Mathematics proposed by the author, Algebra, the first of the four parts which have been prepared, is published in a volume by itself. The other three parts, comprised in the present volume, being small, are sold either separately or together, as may best suit the convenience of the purchaser. On the remaining subjects originally contemplated as parts of the course, treatises by other authors. have been substituted.

QA.

465 D27 1831

Has published the following works which are used as Text Books at Yale College.

An INTRODUCTION TO ALGEBRA, being the first part of a Course of Mathematics, adapted to the method of instruction in the American Colleges, by Jeremiah Day, D. D. LL. D. President of Yale College. 8vo.

A TREATISE OF PLANE TRIGONOMETRY, to which is prefixed a summary view of the nature and use of Logarithms, being the second part of a Course of Mathematics, adapted to the method of instruction in the American Colleges, by the same. 8vo.

A PRACTICAL APPLICATION OF THE PRINCIPLES OF GEOMETRY, to the MENSURATION of superficies and solids, being the third part of a Course of Mathematics adapted to the method of instruction, &c. &c. by the same.

8vo.

THE MATHEMATICAL PRINCIPLES OF NAVIGATION AND SURVEYING, with the MENSURATION of heights and distances, being the fourth part of a Course of Mathematics, &c. by the same. 8vo.

ELEMENTS OF CHEMISTRY, in the order of the Lectures given in Yale College, by Benjamin Silliman, Professor of Chemistry, Pharmacy, Mineralogy and Geology. 2 vols. 8vo.

H. H. INTENDS PUBLISHING,

An INTRODUCTION TO NATURAL PHILOSOPHY, intended as a Text Book for the use of the students in Yale College: in two volumes. Vol. I, MECHANICS.

Part 1. Mathematical Elements of Mechanics, taken chiefly from Bridge's Mechanics.

Part 2. Practical application of Mechanics, compiled from various authorities.

By Denison Olmsted, Professor of Mathematics and Natural Philosophy in Yale College.

N. B. The first volume of the above work will be published in a few weeks, the first part being already printed, and the second nearly through the press. The second volume comprising the remaining topics of Natural Philosophy, will be commenced immediately afterwards.

IN PRESS, a Treatise on the Construction, Properties and Analogies of the three Conic Sections, by the Rev. B. Bridge, B. D. F. R. S. with alterations and additions, adapted to the method of instruction in the American Colleges.

New Haven, May, 1831.

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L. S.

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DISTRICT OF CONNECTICUT, ss.

BE IT REMEMBERED, that on the thirty-first day of March, A. D. 1831, JEREMIAH DAY, of the said District, hath deposited in this Office the title of a Book, the title of which, is in the words following, to wit:—

"A treatise of Plane Trigonometry; to which is prefixed a summary view of the nature and use of Logarithms: being the second part of a course of Mathematics, adapted to the method of instruction in the American Colleges. By Jeremiah Day, D. D. LL. D. President of Yale College. Third Edition, with additions and alterations."

The right whereof, he claims as Author, in conformity with an Act of Congress, entitled "An act to amend the several acts respecting Copy Rights."

CHAS. A. INGERSOLL, Clerk of the District of Connecticut.

As

The plan upon which this work was originally commenced, is continued in this second part of the course. the single object is to provide for a class in college, such matter as is not embraced by this design is excluded. The mode of treating the subjects, for the reasons mentioned in the preface to Algebra, is, in a considerable degree, diffuse. It was thought better to err on this extreme, than on the other, especially in the early part of the course.

The section on right angled triangles will probably be considered as needlessly minute. The solutions might, in all cases, be effected by the theorems which are given for oblique angled triangles. But the applications of rectangular trigonometry are so numerous, in navigation, surveying, astronomy, &c. that it was deemed important, to render familiar the various methods of stating the relations of the sides and angles; and especially to bring distinctly into view the principle on which most trigonometrical calculations are founded, the proportion between the parts of the given triangle, and a similar one formed from the sines, tangents, &c. in the tables.

geura.

Briggs'