Useful Engineering Works, etc. I. LROAD FIELD-BOOK FOR RAILROAD ENGINEERS, Containing Formula for laying out Simple, Reversed and Compound Curves, Parabolic Curves, Vertical Curves, Determining Frog Angles and Radii of Turnouts and Crossings, Levelling, Setting Slope Stakes, Elevating Outer Rail on Curves, Curving Rails, &c., &c.; together with many Miscel laneous Problems, and a New System of Earth-Work. Also, Tables of Radii, Ordinates, Chord, and Tangent Deflections, Ordinates for Curving Rails, Long Chords, Elevation of Outer Rail, Frog Angles, Properties of Materials, Magnetic Variations, Squares, Cubes, Square Roots, and Cube Roots, Logarithms of Number, Logarithmic Sines, Cosines, Tangents, and Cotangents, Natural Sines, and Cosines, Natural Tangents and Cotangents, Rise per mile of Grades, &c. BY JOHN B. HENCK, CIVIL ENGINEER. One volume with fifty-eight Diagrams, pocket-book form, $ II. TEMPLETON'S ENGINEER, MILLWRIGHT, AND MECHANIC'S POCKET COMPANION, Comprising Decimal Arithmetic, Tables of Square and Cube Roots, Practical Geometry, Mensuration, Strength of Materials, Mechanic Powers, Water Wheels, Pumps, and Pumping Engines, Steam Engines, Tables of Specific Gravity, &c., &c. Also a series of MATHEMATICAL TABLES. NEW EDITION, REVISED, CORRECTED, AND ENLARGED. III. GENERAL THEORY OF BRIDGE CONSTRUCTION, CONTAINING DEMONSTRATIONS OF THE PRINCIPLES OF THE ART, AND THEIR APPLICATION TO PRACTICE, WITH PRACTICAL ILLUSTRATIONS. BY HERMAN HAUPT, A. M., CIVIL ENGINEER. One volume 8vo., pp. 268, engravings, $3. IV. A CATECHISM OF THE STEAM ENGINE, Illustrative of the Scientific Principles upon which its operation depends, and the practical details of its structure, in its application to Mines, Mills, Steam Navigation and Railways, WITH VARIOUS SUGGESTIONS OF IMPROVEMENT. BY JOHN BOURNE, C. E. One neat vol. 16mo., pp. 288. Price, 75 cents. V. TREATISE ON MARINE AND NAVAL ARCHITECTURE; OR, THEORY AND PRACTICE BLENDED IN SHIP BUILDING. BY JOHN W. GRIFFITHS, MARINE AND NAVAL ARCHITECT. Fourth edition, one volume 4to, with over fifty engravings, $10. Valuable New Atlases. APPLETON'S MODERN ATLAS OF THE EARTH. 8vo. size, bound in 1 vol. English 8vo. Price, only $3 50. "Nothing could be more beautiful than the style in which this exceedingly valuable work is executed. It is done in the very first style of art, and prepared with a care and attention that insure the greatest possible accuracy. Besides the thirty-four beautifully engraved and colored maps, with comparative scales, it contains an alphabetical index of the latitudes and longitudes of 31,000 places. An Atlas of this character, corrected up to the present year, convenient in size, and in every way admirably fitted for the study, the library, or the school-room, we regard as indispensable. We bespeak for it the attention of our readers."-Churchman. APPLETON'S COMPLETE ATLAS OF THE WORLD, An Introduction to Physical and Historical Geography, and an Alphabetical Index of the Latitudes of 72,000 Places. SIXTY-ONE ELEGANTLY ENGRAVED AND COLORED MAPS. WITH COMPARATIVE SCALES. 1 vol., 4to., half mor. gilt edges, $9. This larger and more elaborate Atlas, contains very full Statistical and Geographical details in addition to the Maps, which are very carefully colored. LOWRY'S TABLE ATLAS, CONSTRUCTED AND ENGRAVED FROM THE MOST RECENT AUTHORITIES. By J. W. LOWRY, F. R. G. S. BLACK'S GENERAL ATLAS OF THE WORLD. New edition, embracing all the latest discoveries, obtained from Government Surveys, Books of FINDLAY'S CLASSICAL ATLAS, TO ILLUSTRATE ANCIENT GEOGRAPHY. Comprised in 25 maps, showing the Various Divisions of the World as known to the Ancients; composed from the most authentic Sources. WITH AN INDEX OF THE ANCIENT AND MODERN NAMES. 1 vol. 8vo., half bound, $3. Important Philosophical Works. I. PHILOSOPHY OF SIR WILLIAM HAMILTON, BART, PROFESSOR OF LOGIC AND METAPHYSICS IN EDINBURGH UNIVERSITY. Arranged and Edited by O. W. WIGHT, Translator of Cousin's "History of Modern Philosophy." One vol. 8vo., pp. 530, well printed. $1 50. "Sir William Hamilton has attained to the very highest distinction as a philosopher, and in some respects he is decidedly superior to any of his illustrious predecessors-Reid, Stuart or Brown. With a remarkable power of analysis and discrimi nation, he combines great decision and elegance of style, and a degree of erudition that is almost without a parallel.”— Edinburgh Review. II. COURSE OF THE HISTORY OF MODERN PHILOSOPHY. BY M. VICTOR COUSIN. TRANSLATED BY O. W. WIGHT. Two volumes 8vo., well printed. Price, $3. "M. Cousin is the greatest philosopher of France."-Sir William Hamilton. “A writer, whose pointed periods have touched the chords of modern society, and thrilled through the minds of thousands in almost every quarter of the civilized world.”—Edinburgh Review. III. THE PHILOSOPHY OF THE BEAUTIFUL. FROM THE FRENCH OF VICTOR COUSIN. TRANSLATED, WITH NOTES, BY J. C. DANIEL. One neat vol. 12mo. Price, 63 cts. IV. THE POSITIVE PHILOSOPHY OF AUGUSTE COMTE. FREELY TRANSLATED AND CONDENSED BY HARRIET MARTINEAU. Two volumes 8vo., pp. 516, 577, well printed. Price, $4 V. LECTURES ON THE TRUE, THE BEAUTIFUL, AND THE GOOD. BY VICTOR COUSIN. TRANSLATED BY O. W. WIGHT. One neat volume 8vo. (Nearly ready.) Books for Merchants. I. THE MERCHANT'S BOOK OF REFERENCE FOR DEBTOR AND CREDITOR IN THE UNITED STATES & CANADA. A COLLECTION OF MODERN LETTERS OF BUSINESS; WITH NOTES, CRITICAL AND EXPLANATORY, AN ANALYTICAL INDEX, AND AN APPENDIX, Containing Pro Forma Invoices, Account Sales, Bills of Lading, and Bills of Exchange, &c. BY WILLIAM ANDERSON. One neat volume, 12mo., pp. 311, price $1. IV. DELISSER'S INTEREST AND AVERAGE TABLES, SEVEN PER CENT. A New Method, comprising Accuracy, Speed, and Simplicity, by which the interest on any amount, FROM $1 TO $3,600, For any Period from One Day to One Year, "can be found at a Glance," and for averaging even the most intricate accounts in a shorter time, and with fewer figures, than by any other system. 1 vol. 4to. beautifully printed, half bound, $4. Useful Household Works. I. THE MODERN HOUSEWIFE, COMPRISING NEARLY ONE THOUSAND RECEIPTS FOR THE ECONOMIC AND JUDICIOUS PREPARATION OF EVERY MEAL Of the Day, and MINUTE DIRECTIONS FOR FAMILY MANAGEMENT IN ALL ITS BRANCHES. By ALEXIS SOYER. 1 volume, 12mo., neatly bound. Price, $1. II. THE INVALID'S OWN BOOK, A COLLECTION OF RECIPES FROM VARIOUS BOOKS AND VARIOUS COUNTRIES. By THE HONORABLE LADY CUST. 1 vol. 12mo. Cloth, 50 cents. III. BOOK OF USEFUL KNOWLEDGE. A CYCLOPEDIA, OF SIX THOUSAND PRACTICAL RECEIPTS, AND COLLATERAL INFORMATION IN THE ARTS, MANUFACTURES, AND TRADES, INCLUDING MEDICINE, PHARMACY, AND DOMESTIC ECONOMY. By A. J. COOLEY. 1 volume, 8vo. pp. 576, neatly bound, $1 50. IV. THE CHEMISTRY OF COMMON LIFE. By JAMES F. W. JOHNSTON, M. A., F. R. S., F. G. S. COMPRISING The Air we Breathe, the Water we Drink, The Soil we Cultivate, and the Plants we Rear. The Bread we Eat, The Beef we Cook, and the Beverages we Infuse. The Sweets we Extract, The Liquors we Ferment, and the Narcotics we Indulge in. The Odors we Enjoy, The Smells we Dislike. What we Breathe and Breathe for, And what, how, and why we Digest. The Body we Cherish, and the Circulation of Matter. A Recapitulation. WITH NUMEROUS WOOD-CUT ILLUSTRATIONS. Complete in 5 Nos. Paper covers, 75 cts. 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