VALUABLE WORKS

PUBLISHED BY

ROBERT B. COLLINS,

Lo. 254 Pearl Street, Lew York.

PROFESSOR OLMSTED'S SERIES.

OLMSTED'S NATURAL PHILOSOPHY. 8vo. College edition.

An Introduction to Natural Philosophy; designed as a text book for students in Yale College.

OLMSTED'S ASTRONOMY.

8vo. College edition.

An Introduction to Astronomy; designed as a text-book for the use of students in Yale College.

The two works were originally prepared by the author (Denison Olmsted, L.L.D.) for the use of the classes under his care in Yale College, and have been adopted as text-books in most of the colleges and higher seminaries of learning in the country.

MASON'S SUPPLEMENT.

An Introduction to Practical Astronomy, designed as a Supple ment to Olmsted's Astronomy; containing Special Rules for the Adjustment and Use of Astronomical Instruments, together with the Calculation of Eclipses and Occultations, and the method of finding the Latitude and Longitude. By Ebenezer Porter Mason. OLMSTED'S SCHOOL ASTRONOMY. 12mo.

A Compendium of Astronomy; containing the Elements of the Science familiarly explained and illustrated, with the Latest Discoveries, for the use of schools and academies and of the general reader.

OLMSTED'S RUDIMENTS.

18mo.

Rudiments of Natural Philosophy and Astronomy; designed for the younger classes in academies and for common schools. A very valuable text-book for beginners.

2

ROBERT B. COLLINS'S PUBLICATIONS.

PROFESSOR COFFIN'S WORKS.

COFFIN'S ECLIPSES.

Solar and Lunar Eclipses, Familiarly Illustrated and Explained, with the Method of Calculating them according to the Theory of Astronomy, as taught in the New England Colleges.

COFFIN'S CONIC SECTIONS.

Elements of Conic Sections and Analytical Geometry.

These works, by Prof. James H. Coffin, of Lafayette College, Pa., have received the highest recommendations from qualified authority. Of the second named, (Conic Sections, &c.) Prof. Loomis, (College of New Jersey,) Prof. Sadler, Prof. Mason, and other dis tinguished gentlemen, unite in approval.

BY LYMAN PRESTON.

PRESTON'S DISTRICT SCHOOL BOOK-KEEPING, Affording an interesting and profitable exercise for youth, being especially designed for Classes in our Common Schools.

PRESTON'S BOOK-KEEPING BY SINGLE ENTRY, Adapted to the use of Retailers, Farmers, Mechanics, and Common Schools.

PRESTON'S TREATISE ON BOOK-KEEPING ;

A common-sense guide to a common-sense mind. In two partsthe first the Single Entry method, the second being arranged more particularly for the instruction of young men who contemplate the pursuit of mercantile business, showing the method of keeping accounts by Double Entry, and embracing a variety of useful forms. This is the most popular work upon the subject, and is in very extensive use throughout the country.

ADAMS'S ARITHMETICAL SERIES.

ADAMS'S PRIMARY ARITHMETIC,

Or Mental Operationsin Numbers, an Introduction to Adams's New Arithmetic, revised edition. An excellent work for young learners. ADAMS'S NEW ARITHMETIC. Revised edition.

By Daniel Adams, M.D. A new edition of this superior work, with various improvements and additions, as the wants of the times demand. A Key is published separately.

ADAMS'S MENSURATION, MECHANICAL POWERS, AND MACHINERY.

This admirable work is designed as a sequel to the Arithmetic.