=THE CHEMISTRY OF ESSENTIAL OILS AND ARTIFICIAL PERFUMES.= By ERNEST J. PARRY, B.Sc (Lond.), F.I.C., F.C.S. 411 pp. 20 Illustrations. 1899. Demy 8vo. Price 12s. 6d.; India and Colonies, 13s. 6d.; Other Countries. 15s.; strictly net. Contents. =The General Properties of Essential Oils=--=Compounds occurring in Essential Oils=--=The Preparation of Essential Oils=--=The Analysis of Essential Oils=--=Systematic Study of the Essential Oils=--=Terpeneless Oils=--=The Chemistry of Artificial Perfumes=--=Appendix=: Table of Constants--=Index.= Cosmetical Preparations. =COSMETICS: MANUFACTURE, EMPLOYMENT AND TESTING OF ALL COSMETIC MATERIALS AND COSMETIC SPECIALITIES.= Translated from the German of Dr. THEODOR KOLLER. Crown 8vo. 262 pp. 1902. Price 5s.; India and Colonies, 5s. 6d.; Other Countries, 6s. net. Contents. Purposes and Uses of, and Ingredients used in the Preparation of Cosmetics--Preparation of Perfumes by Pressure, Distillation, Maceration, Absorption or Enfleurage, and Extraction Methods--Chemical and Animal Products used in the Preparation of Cosmetics--Oils and Fats used in the Preparation of Cosmetics--General Cosmetic Preparations-- Mouth Washes and Tooth Pastes--Hair Dyes, Hair Restorers and Depilatories--Cosmetic Adjuncts and Specialities--Colouring Cosmetic Preparations--Antiseptic Washes and Soaps--Toilet and Hygienic Soaps--Secret Preparations for Skin, Complexion, Teeth, Mouth, etc.--Testing and Examining the Materials Employed in the Manufacture of Cosmetics--Index. Glue, Bone Products and Manures. =GLUE AND GLUE TESTING.= By SAMUEL RIDEAL, D.Sc. (Lond.), F.I.C. Fourteen Engravings. 144 pp. Demy 8vo. 1900. Price 10s. 6d.; India and Colonies, 11s.; Other Countries, 12s.; strictly net. Contents. =Constitution and Properties=: Definitions and Sources, Gelatine, Chondrin and Allied Bodies, Physical and Chemical Properties, Classification, Grades and Commercial Varieties--=Raw Materials and Manufacture=: Glue Stock, Lining, Extraction, Washing and Clarifying, Filter Presses, Water Supply, Use of Alkalies, Action of Bacteria and of Antiseptics, Various Processes, Cleansing, Forming, Drying, Crushing, etc., Secondary Products--=Uses of Glue=: Selection and Preparation for Use, Carpentry, Veneering, Paper-Making, Bookbinding, Printing Rollers, Hectographs, Match Manufacture, Sandpaper, etc., Substitutes for other Materials, Artificial Leather and Caoutchouc-- =Gelatine=: General Characters, Liquid Gelatine, Photographic Uses, Size, Tanno-, Chrome and Formo-Gelatine, Artificial Silk, Cements, Pneumatic Tyres, Culinary, Meat Extracts, Isinglass, Medicinal and other Uses, Bacteriology--=Glue Testing=: Review of Processes, Chemical Examination, Adulteration, Physical Tests, Valuation of Raw Materials--=Commercial Aspects.=