=MURRAY, J. A. Soils and Manures.= 33 illustrations. 8vo. cloth. 367 pp. (Van Nostrand’s Westminster Series.) =net, $2.00= =NAQUET, A. Legal Chemistry.= A guide to the detection of poisons as applied to chemical jurisprudence. Translated, with additions, from the French, by J. P. Battershall. _Second Edition, revised with additions._ 12mo. cloth. 190 pp. =$2.00= =NEAVE, G. B., and HEILBRON, I. M. The Identification of Organic Compounds.= 12mo. cloth. 111 pp. =net, $1.25= =NORTH, H. B. Laboratory Experiments in General Chemistry.= _Second Edition, revised._ 36 illustrations. 5-1/4 x 7-3/4. cloth. 212 pp. =net, $1.00= =OLSEN, J. C. A Textbook of Quantitative Chemical Analysis by Gravimetric and Gasometric Methods.= Including 74 laboratory exercises giving the analysis of pure salts, alloys, minerals and technical products. _Fourth Edition, revised and enlarged._ 74 illustrations. 8vo. cloth. 576 pp. =net, $4.00= =PAKES, W. C. G., and NANKIVELL, A. T. The Science of Hygiene.= A text-book of laboratory practice. 80 illustrations. 12mo. cloth. 175 pp. =net, $1.75= =PARRY, ERNEST J. The Chemistry of Essential Oils and Artificial Perfumes.= _Second Edition, thoroughly revised and greatly enlarged._ Illustrated. 8vo. cloth. 554 pp. =net, $5.00= =——Food and Drugs.= In 2 volumes. Illus. 8vo. cloth. Vol. I. The Analysis of Food and Drugs (Chemical and Microscopical). 59 illus. 724 pp. =net, $7.50= Vol. II. The Sale of Food and Drugs Acts, 1873-1907. 184 pp. =net, $3.00= =PARTINGTON, JAMES R. A Text-book of Thermodynamics= (with special reference to Chemistry). 91 diagrams. 8vo. cloth. 550 pp. =net, $4.00= =—— Higher Mathematics for Chemical Students.= 44 diagrams. 12mo. cloth. 272 pp. =net, $2.00= =PERKIN, F. M. Practical Methods of Inorganic Chemistry.= Illustrated. 12mo. cloth. 152 pp. =net, $1.00= =PERKIN, F. M., and JAGGERS, E. M. Textbook of Elementary Chemistry.= 77 illustrations. 4-3/4 x 7. cloth. 342 pp. =net, $1.00= =PLATTNER’S Manual of Qualitative and Quantitative Analysis with the Blowpipe.= _Eighth Edition, revised._ Translated by Henry B. Cornwall, assisted by John H. Caswell, from the _Sixth German Edition_, by Friedrich Kolbeck. 87 ill. 8vo. cloth. 463 pp. =net, $4.00=