Aluminium Compounds. China Clay. Iron Compounds. Potassium Compounds. Sodium Compounds. Ammonium Hydrate. Acids. Chromium Compounds. Tin Compounds. Copper Compounds. Lead Compounds. Zinc Compounds. Manganese Compounds. Arsenic Compounds. Antimony Compounds. Calcium Compounds. Barium Compounds. Cadmium Compounds. Mercury Compounds. Ultramarine. Cobalt and Carbon Compounds. Oils Index. =Press Opinions.= "Though this excellent little work can appeal only to a limited class, the chemists in colour works, yet it will appeal to them very strongly indeed, for it will put them on the track of short, rapid, and yet approximately, accurate methods of testing the comparative value of competing samples of raw material used in paint and colour manufacture."--_North British_ _Daily Mail._ "This little text-book is intended to supplement the larger and more comprehensive works on the subject, and it embodies the result of Mr. Jones' experiments and experiences, extending over a long period. It gives, under separate headings, the principal ingredients and impurities found in the raw materials, and is a handy work of reference for ascertaining what is valuable or detrimental in the sample under examination."--_Blackburn Times._ "There is no attempt at literary adornment nor straining after literary effect, but the lessons are imparted in simple and concise language. This is just what a text-book should be.... The treatise is certainly most useful, and bears internal evidence of being the results of actual work in a busy manufactory and not of ephemeral cramming in a technical school. The chapter arrangement is good, the index satisfactory, and the book is altogether one which the practical chemist should keep as accessible to his crucibles and filter paper."--_Manchester_ _Courier._ * * * * * =THE CHEMISTRY OF ESSENTIAL OILS AND ARTIFICIAL PERFUMES.= By ERNEST J. PARRY, B.SC. (Lond.), F.I.C., F.C.S. Illustrated with Twenty Engravings. 400 pp. 1899. Demy 8vo. Price 12s. 6d.; India and Colonies, 13s. 6d.; Other Countries, 15s.; strictly net. =Contents.= Chapters I., =The General Properties of Essential Oils.=--II., =Compounds occurring in Essential Oils.=--III., =The Preparation of Essential Oils.=--IV., =The Analysis of Essential Oils.=--V., =Systematic Study of the Essential Oils.=--VI., =Terpeneless Oils.=--VII., =The Chemistry of Artificial Perfumes.=--=Appendix:= Table of Constants. =Press Opinions.= "There can be no doubt that the publication will take a high place in the list of scientific text-books."--_London Argus_ "We can heartily recommend this volume to all interested in the subject of essential oils from the scientific or the commercial standpoint."--_British and Colonial Druggist._