Algebra. Reprinted under the Superintendence of A. De Morgan. 8vo, cloth. $2.25. London. 1859.

Rankine. Manual of the Steam-Engine, and other Prime Movers. 12mo, cloth. $3.00. London. 1859.

Rankine. Manual of Applied Mechanics. 12mo, cloth. $3.50. London.

1858.

Reech. Machine à Air d'un Noveau Système, déduit d'une Comparaison raisonnée des Systèmes de Ericsson et Semoine. In 4°, half-morocco. $2.50. Paris. 1854.

Regnault, Cours Elémentaire de Chimie. 4 vol. grand in-18°, half-calf. $7.50. Paris. 1859.

Regnault. Manuel des Aspirants au grade d'Ingénieur des Ponts et Chaussées. Guide du Conducteurs des Ponts et Chaussées de l'Argent voyer, du Garde du Génie et de l'Artillerie. 4 vol. in-8°, avec 94 Planches. Half-calf. $10.00. Paris. 1854.

Reynauld et Duhamel. Problèmes et Développemens sur diverses parties des Mathématiques. In-8°, half-calf. $2.25. Paris. 1823. Riddle. Treatise on Navigation and Nautical Astronomy. 2 vols. 8vo, cloth. $3.75. London. 1859.

Roch. Nouvelle Théorie des Proportions et Progressions Harmoniques, avec ses Applications à la Géométrie. In-8°. 88c. Paris. 1852.

Rogers, S. B. Iron Metallurgy. 8vo, cloth. $5.00. London. 1857. Routh. Treatise on the Dynamics of the System of Rigid Bodies. 12mo, cloth. $3.50. London. 1860.

Rozet. Moyens de Forcer les Torrents des Montagnes, et d'Empecheur les Grandes Inondations des Fleuves, &c. 8°. 30c. Paris. 1856.

Ruskin. Elements of Perspective. 12mo, cloth. $1.00. London. 1859. Saint Loup et Bach. Traité des Surfaces du Second Ordre. In-8°. 88c. Paris. 1859.

Salmon. Treatise on Conic Sections. 8vo, cloth. $4.00. London. 1851. Salmon. Lessons Introductory to the Modern Higher Algebra. 8vo, cloth. $2.00. Dublin. 1859.

Salmon. Higher Plane Curves. 8vo, cloth. Dublin. 1852.

Samuelson. The Honey-Bee, its Natural History, &c. 12mo, cloth.

$1.75. London. 1860.

Schubert. Sammlung von Mathematischen Namentlich von Differentialund Integral-Formeln. 8vo. 75c. Dresden. 1842.

Schwann. Microscopical Researches. 8vo, boards. $1.50. London. 1847. Scrivenor. History of the Iron Trade. 8vo, cloth. $1.25. London. 1854. Scrope. The Geology and Extinct Volcanoes of Central France. 8vo, cloth. $9.00. London. 1858.

Serret. Cours d'Algébre Supérieure. In-8°, half-calf. $3.50. Paris. 1854. Serret. Eléments d'Arithmétique. In-8°, half-calf. $1.50. Paris. 1857. Shortrede. Logarithmic Tables. Seven Places of Decimals. Royal 8vo, cloth. $4.00. Edinburgh. 1849.

Siebold et Stannius. Manuel d'Anatomie Comparée. 2 vol. in-18°, half-calf. $3.00. Paris. 1850.

Simms. Principles and Practice of Levelling. 8vo, cloth. $3.50. London.

1856.

Simms. On the Principal Mathematical Instruments. 8vo, cloth. $1.25.
Baltimore, N. D.

Simon. Animal Chemistry, with Reference to the Physiology and Pathol-
ogy of Man. 2 vols. 8vo, cloth. $6.00. London. 1858.
Smith. Arithmetic in Theory and Practice. 12mo, cloth. London. 1860.
Smith. A Synopsis of the British Diatomaceæ.

London. 1853.

8vo, cloth. $15.50.

Smith. Manual of Topographical Drawing. 8vo, cloth. $1.50. New York. 1854.

Smyth. The Mediterranean; a Memoir, Physical, Historical, and Nautical. 8vo, cloth. $4.50. London. 1854.

Snowball. Plane and Spherical Trigonometry. 12mo, cloth. $2.25. Cambridge. 1837.

Somerville. On the Connection of the Physical Sciences. 12mo, cloth. $2.75. London. 1858.

Somerville. Physical Geography. 12mo, cloth. $2.75. London. 1858. Sonnet. Premiers Eléments de Mécanique Appliquée. 120, half-calf. $1.75. Paris. 1857.

Spottiswode. Theorems relating to Determinants. 4to. $1.50. London. 1851.

Stainton. Natural History of the Tineina. 8vo, cloth. $4.25. London. 1855. Stern. Résolution des Equations Transcendantes. In-8°, half-calf. $1.00. Paris. 1858.

Stevenson. The Nature and Properties of Algebraic Equations. 8vo, boards. $1.00. Cambridge. 1835.

Strickland. Memoirs of, by Sir W. Jardine. Royal 8vo, cloth. $10.00.
London. 1858.

Stuart. Dictionary of Architecture. 3 vols. in 2.
Philadelphia. 1854.

8vo, sp. $5.00.

Sturm. Cours de Mécanique de l'Ecole Polytechnique. 2 vols. in-8°. $3.50. Paris. 1861.

Tait and Steele. Dynamics of a Particle. 12mo, cloth. $3.00. Cambridge. 1856.

Tate. Principles of Mechanical Philosophy applied to Industrial Mechanics. 8vo, cloth. $4.00. London.

1853.

Tate. Exercises in Mechanics and Natural Philosophy. With Key. 12mo, cloth. $2.00. London. 1859.

Tate.

On the Strength of Materials. Containing various Original and Useful Formulæ specially applied to Tubular Bridges, Wrought Iron and Cast Iron Beams, etc. 8vo, cloth. $1.75. London. 1850.

Terquem. Bulletin de Bibliographie, d'Histoire, et de Biographie Mathématiques. Tomes V. et VI., 8°. $100. Paris. 1859-1860.

The Gentleman's Diary; or, The Mathematical Repository. 87c.

16mo. 1816.

The Ladies' Diary; or, Woman's Almanac for 1816. 87c. 16mo. 1816. The Lady's and Gentleman's Diary. 16mo. 50c. London.

1861-1862.

Todhunter. Algebra for the Use of Colleges and Schools. 12mo, cloth. $2.25. London. 1860.

Todhunter. Treatise on Analytic Statics. 12mo, cloth. $3.25. London. 1858.

Todhunter. Spherical Trigonometry for the Use of Colleges and Schools. 12mo, cloth. $1.50. London. 1859.

Todhunter. Plane Trigonometry for the Use of Colleges and Schools. 12mo, cloth. $1.50. London. 1860.

Todhunter. Treatise on the Differential Calculus. 12mo, cloth. $3.25. London. 1860.

Todhunter.

London. 1860.

Treatise on the Integral Calculus. 12mo, cloth. $3.25.

Todhunter. A History of the Progress of the Calculus of Variations during the Nineteenth Century. 8vo, cloth. $3.75. London. 1861. Transactions of the Institution of Civil Engineers. 3 vols. 4to, cloth. $25.00 London. 1836-1842.

Tredgold. Principles of Warming and Ventilating Public Buildings. 8vo, boards. . $3.00. London. 1824.

Tresca. Traité Elémentaire de Géométrie Descriptive. In-8°, half-calf. $3.00. Paris. 1852.

Vallée. Traité de la Science du Dessin. 2° édition. In-4°, et Atlas of 56 Planches. Half-morocco. $7.50. Paris. 1838.

Vallés. Etudes sur les Innondations. In-8°, half-mor. $3.50. Paris. 1857. Vega. Logarithmic Tables, edited by Fischer. 8vo, half-morocco. $2.50. Berlin. 1861.

Verhulst. Traité Elémentaire des Fonctions Elliptiques. In-8. $2.50. Paris. 1841.

Vestiges of the Natural History of Creation. 8vo, cloth.
$3.75. London. 1853.

Vicat. Calcareous Mortars and Cements. 8vo, cloth. $3.00. Rare. An-
other copy, $2.25. London. 1837.

Vieille. Cours Complémentaire d'Analyse et de Mécanique Rationnelle.
In-8°, half-calf. $2.50. Paris. 1851.

Violeine. Tables pour les Calculs d'Intérêts Simples et Composés d'Amor-
tissement, d'Annuités de Primes, etc. In-4°, half-morocco. $5.50. Paris.
1854.

Vitruvius. On Civil, Military, and Naval Architecture, translated by J.
Gwilt. $1.67.

Walton. Problems in Elementary Mechanics. 8vo, cloth. $3.25. Cam-
bridge. 1856.

Walton. Differential Calculus. 8vo, cloth. $3.50. London. 1846. Walton. Collection of Problems in Illustration of the Principles of Theoretical Mechanics. 8vo, cloth. $4.50. Cambridge. 1842.

Walton. Treatise on the Application of Analysis to Solid Geometry,
commenced by D. T. Gregory. 8vo, cloth. $4.00. London. 1847.
Walton. Problems in Illustration of the Principles of Theoretical Mechan-
ics. 8vo, cloth. $6.00. London. 1855.

Walton. Problems in Illustration of the Principles of Theoretical Hydro-
statics and Hydrodynamics. 8vo, cloth. $3.50. London. 1847.
Walton. Problems in Illustration of the Principles of Plane Co-ordinate
Geometry. 8vo, cloth. $5.50. London. 1847.

8vo, cloth.

Walton and Mackensie. Solutions of the Problems and Riders pro-
posed in the Senate-House Examination for 1854.
Cambridge.

$3.50.

Warr. Dynamics and Strength of Materials. 8vo, cloth. $2.50. London. 1851.

Warren. General Problems from the Orthographic Projections of Descriptive Geometry. 8vo, cloth. $3.00. New York. 1860.

Watson. Solutions of the Cambridge Problems and Riders, proposed in the Senate-House Examination for 1857. 8vo, cloth. $ 2.50. London. 1857. Watson and Routh. Cambridge Senate-House Problems and Riders, for the Year 1860, with Solutions. 12mo, cloth. $2.25. London. 1860. Weale. Rudimentary Treatises. - Mathematics, Engineering, &c. Webster. Theory of the Equilibrium and Motion of Fluids. 8vo, cloth. $3.00. London. 1836.

Weinland. Human Cestoides, an Essay on the Tape-Worms of Man. 8vo, paper. 75c. Cambridge. 1858.

Westwood. Introduction to the Modern Classification of Insects. 2 vols. 8vo, cloth. $6.00. London. 1839.

Whewell. Analytic Statics. Second-hand. $2.25. Cambridge. 1833. Whishaw. Railways of Great Britain and Ireland. 4to, cloth. $5.00. London. 1840.

Whitworth. Miscellaneous Papers on Mechanical Subjects. 8vo, cloth. $1.50. London. 1858.

Wilkie. On the Manufacture of Iron in Great Britain. 8vo, cloth. $2.75. London. 1857.

Wilkinson. The British Tortrices. 8vo, cloth. $7.50. London. 1859. Will, Voehler, Liebig. Manual de Chimie Analytique. 2 vols. in 1. In-18°, half-calf. $1.75. Paris. 1855.

Williams. A Manual for Teaching Model Drawing from Solid Forms. 8vo, cloth. $5.00. London. 1852.

Williams. Practical Geodesy. 8vo, cloth. $2.87. London. 1855. Williams. Handbook of Chemical Manipulations. 12mo, cloth. $4.50. London. 1857.

Williams. On Heat in its Relations to Water and Steam. 8vo, cloth. $2.25. London. 1860.

Wilme. Handbook for Mapping, Engineering, and Architectural Drawing. 4to, half-morocco. $7.00. London. 1846.

Wilme. The Civil Engineer's Practical Constructor, comprising Working Drawings and Specifications of Bridges, Viaducts, etc., etc.

4to, cloth.

Wilson. Treatise on Dynamics. 8vo, boards. $3.00. London. 1850. Wilson. The Lost Solar System of the Ancients Discovered. 2 vols. 8vo, cloth. $7.50. London. 1856.

Wohler. Handbook of Inorganic Analysis. Edited by A. W. Hoffman. 12mo, cloth. $1.00. London. 1854.

Wood, N. Practical Treatise on Railroads. 8vo, cloth. $1.50. London. Woodward. Manual of the Mollusca, a Treatise of Recent and Fossil Shells. $1.33.

Woolhouse. Elements of the Differential Calculus. 33c.

Wrigley. Examples and Problems in Pure and Mixed Mathematics. 8vo, half-cloth. London. 1857.

Young, Holley, and Fisher.. Economy of Steam Power. 12mo, cloth. $3.00.

Yvon Villarceau.

Sur l'Etablissement des Arches de Pont. In-4°,

half-calf. $5.00. Paris. 1853.