Davenport’s Statistical Methods, with Special Reference to Biological Variation 16mo, morocco, 1 25 Thomé and Bennett’s Structural and Physiological Botany 16mo, 2 25 Westermaier’s Compendium of General Botany. (Schneider.) 8vo, 2 00 CHEMISTRY. Adriance’s Laboratory Calculations and Specific Gravity Tables 12mo, 1 25 Allen’s Tables for Iron Analysis 8vo, 3 00 Arnold’s Compendium of Chemistry. (Mandel Small 8vo, 3 50 Austen’s Notes for Chemical Students 12mo, 1 50 Bernadou’s Smokeless Powder.—Nitro-cellulose, and Theory of the Cellulose Molecule 12mo, 2 50 * Browning’s Introduction to the Rarer Elements 8vo, 1 50 Brush and Penfield’s Manual of Determinative Mineralogy 8vo, 4 00 Classen’s Quantitative Chemical Analysis by Electrolysis. (Boltwood.) 8vo, 3 00 Cohn’s Indicators and Test-papers 12mo, 2 00 Tests and Reagents 8vo, 3 00 Crafts’s Short Course in Qualitative Chemical Analysis. (Schaeffer.) 12mo, 1 50 Dolezalek’s Theory of the Lead Accumulator (Storage Battery). (Von Ende.) 12mo, 2 50 Drechsel’s Chemical Reactions. (Merrill.) 12mo, 1 25 Duhem’s Thermodynamics and Chemistry. (Burgess.) 8vo, 4 00 Eissler’s Modern High Explosives 8vo, 4 00 Effront’s Enzymes and their Applications. (Prescott.) 8vo, 3 00 Erdmann’s Introduction to Chemical Preparations. (Dunlap.) 12mo, 1 25 Fletcher’s Practical Instructions in Quantitative Assaying with the Blowpipe. 12mo, morocco, 1 50 Fowler’s Sewage Works Analyses 12mo, 2 00 Fresenius’s Manual of Qualitative Chemical Analysis. (Wells.) 8vo, 5 00 Manual of Qualitative Chemical Analysis. Part I. Descriptive. (Wells.) 8vo, 3 00 System of Instruction in Quantitative Chemical Analysis. (Cohn.) 2 vols 8vo, 12 50 Fuertes’s Water and Public Health 12mo, 1 50 Furman’s Manual of Practical Assaying 8vo, 3 00 * Getman’s Exercises in Physical Chemistry 12mo, 2 00 Gill’s Gas and Fuel Analysis for Engineers 12mo, 1 25 Grotenfelt’s Principles of Modern Dairy Practice. (Woll.) 12mo, 2 00