Part IV., =Chemical Characteristics of Iron and Aluminium.=--=Analysis

of Various Aluminous or Ferruginous Products.=—Chapter VII., Aluminium.—=Analysing Aluminium Products.=—Alunite Alumina—Sodium Aluminate—Aluminium Sulphate. Chapter VIII., =Iron.=—Analytical Characteristics of Iron Salts—Analysis of Pyritic Lignite—Ferrous and Ferric Sulphates—Rouil Mordant—Index.

=MANUAL OF AGRICULTURAL CHEMISTRY.= By HERBERT INGLE, F.I.C., Lecturer on Agricultural Chemistry, the Yorkshire College; Lecturer in the Victoria University. [In the press.

=Contents.=

Chapters I., Introduction.—II., The Atmosphere.—III., The Soil.—IV., The Reactions occurring in Soils.—V., The Analysis of Soils.—VI., Manures, Natural.—VII., Manures (continued).—VIII., The Analysis of Manures.—IX., The Constituents of Plants.—X., The Plant.—XI, Crops.—XII., The Animal.

=LUBRICATING OILS, FATS AND GREASES:= Their Origin, Preparation, Properties, Uses and Analyses. A Handbook for Oil Manufacturers, Refiners and Merchants, and the Oil and Fat Industry in General. By GEORGE H. HURST, F.C.S. Second Edition. Sixty-five Illustrations. 313 pp. Demy 8vo. 1901. Price 10s. 6d.; India and Colonies, 11s.; Other Countries, 12s.; strictly net.

=Contents.=

Chapters I., =Introductory.= Oils and Fats, Fatty Oils and Fats, Hydrocarbon Oils, Uses of Oils.—II., =Hydrocarbon Oils.= Distillation, Simple Distillation, Destructive Distillation, Products of Distillation, Hydrocarbons, Paraffins, Olefins, Napthenes.—III., =Scotch Shale Oils.= Scotch Shales, Distillation of Scotch Oils, Shale Retorts, Products of Distilling Shales.

Separating Products, Treating Crude Shale Oil, Refining Shale Oil, Shale Oil Stills, Shale Naphtha Burning Oils, Lubricating Oils, Wax.—IV., =Petroleum.= Occurrence, Geology, Origin, Composition, Extraction, Refining, Petroleum Stills, Petroleum Products, Cylinder Oils, Russian Petroleum, Deblooming Mineral Oils.—V., =Vegetable and Animal Oils.= Introduction, Chemical Composition of Oils and Fats, Fatty Acids, Glycerine, Extraction of Animal and Vegetable Fats and Oils, Animal Oils, Vegetable Oils, Rendering, Pressing, Refining, Bleaching, Tallow, Tallow Oil, Lard Oil, Neatsfoot Oil, Palm Oil, Palm Nut Oil, Cocoa-nut Oil, Castor Oil, Olive Oil, Rape and Colza Oils, Arachis Oil, Niger Seed Oil, Sperm Oils, Whale Oil, Seal Oil, Brown Oils, Lardine, Thickened Rape Oil.—VI., =Testing and Adulteration of Oils.= Specific Gravity, Alkali Tests, Sulphuric Acid Tests, Free Acids in Oils, Viscosity Tests, Flash and Fire Tests, Evaporation Tests, Iodine and Bromide Tests, Elaidin Test, Melting Point of Fat, Testing Machines.—VII., =Lubricating Greases.= Rosin Oil, Anthracene Oil, Making Greases, Testing and Analysis of Greases.—VIII., =Lubrication.= Friction and Lubrication, Lubricant, Lubrication of Ordinary Machinery, Spontaneous Combustion of Oils, Stainless Oils, Lubrication of Engine Cylinders, Cylinder Oils.—=Appendices.= A. Table of Baume's Hydrometer—B. Table of Thermometric Degrees—C. Table of Specific Gravities of Oils—=Index.=

=Press Opinions.=

"The book is well printed, and is a credit alike to author, printer and publisher."—Textile Mercury.

"It will be a valuable addition to the technical library of every steam user's establishment." —Machinery Market.

"Mr. Hurst has in this work supplied a practical treatise which should prove of especial value to oil dealers, and also, though in a less degree, to oil users."—Textile Manufacturer.

"This is a clear and concise treatment of the method of manufacturing and refining lubricating oils.... The book is one which is well worthy the attention of readers who are users of oil."—Textile Recorder.

"We have no hesitation in saying that in our opinion this book ought to be very useful to all those who are interested in oils, whether as manufacturers or users of lubricants, or to those chemists or engineers whose duty it may be to report upon the suitability of the same for any particular class of work."—Engineer.

"The author is widely known and highly respected as an authority on the chemistry of oils and the technics of lubrication, and it is safe to say that no work of similar interest or equal value to the general oil-selling and consuming public has heretofore appeared in the English language."—Drugs, Oils and Paints, U.S.A.

"This valuable and useful work, which is both scientific and practical, has been written with a view of supplying those who deal in and use oils, etc., for the purpose of lubrication, with some information respecting the special properties of the various products which cause these various oils to be of value as lubricants."—Industries and Iron.

"A mere glance at the table of contents is sufficient to show how various are the conditions to which these materials have to be applied, how much knowledge is required for the selection of the right kind for each particular purpose, and how by processes of mixture or manufacture the requisite qualities are obtained in each case."—Manchester Guardian.

=AMMONIA AND ITS COMPOUNDS:= Their Manufacture and Uses. By CAMILLE VINCENT, Professor at the Central School of Arts and Manufactures, Paris. Translated from the French by M. J. SALTER. Royal 8vo. 113 pp. 1901. Thirty-two Illustrations. Price 5s.; India and Colonies, 5s. 6d.; Other Countries, 6s.; strictly net.

=Contents.=

Chapters I., =General Considerations=: Sections 1. Various Sources of Ammoniacal Products; 2. Human Urine as a Source of Ammonia. II., =Extraction of Ammoniacal Products from Sewage=: Sections 1. Preliminary Treatment of Excreta in the Settling Tanks—The Lencauchez Process, The Bilange Process, The Kuentz Process; 2. Treatment of the Clarified Liquors for the Manufacture of Ammonium Sulphate—The Figuera Process and Apparatus, Apparatus of Margueritte and Sourdeval, The Lair Apparatus, Apparatus of Sintier and Muhe, Apparatus of Bilange, The Kuentz Process, Process and Apparatus of Hennebutte and De Vaureal; 3. Treatment of Entire Sewage—Chevalet's Apparatus, Paul Mallet's Apparatus, Lencauchez's Apparatus. III., =Extraction of Ammonia from Gas Liquor=: Sections 1. Clarification of Gas Liquor; 2. Manufacture of Ammonium Sulphate—A. Mallet's Apparatus, A. Mallet's Modified Apparatus, Paul Mallet's Apparatus, Chevalet's Apparatus, Grueneberg's Apparatus; 3. Concentration of Gas Liquor—Solvay's Apparatus, Kuentz's Apparatus, Grueneberg's Apparatus. IV., Manufacture of Ammoniacal Compounds from Bones, Nitrogenous Waste, Beetroot Wash and Peat=: Sections 1. Ammonia from Bones: 2. Ammonia from Nitrogenous Waste Materials; 3. Ammonia from Beetroot Wash (Vinasse): 4. Ammonia from Peat—Treatment of the Ammoniacal Liquors. V., =Manufacture of Caustic Ammonia, and Ammonium Chloride, Phosphate and Carbonate=: Sections 1. Manufacture of Caustic Ammonia; 2. Manufacture of Ammonium Chloride—From Fermented Urine, Process of the Lesage Company, Kuentz's Process; From Gas Liquor, English Process, Kuentz's Process; From the Dry Distillation of Animal Matter; From Ammonium Sulphate, Sublimation; 3. Ammonium Phosphates; 4. Carbonates of Ammonium—Sesquicarbonate from Animal Matter, English Process. Uses. VI., =Recovery of Ammonia from the Ammonia-Soda Mother Liquors=: Sections 1. General Considerations; 2. Apparatus of Schloesing and Rolland; 3. Apparatus of the Societe Anonyme de l'Est.—=Index.=

=THE MANUFACTURE OF VARNISHES, OIL REFINING AND BOILING, AND KINDRED INDUSTRIES.= Describing the Manufacture of Spirit Varnishes and Oil Varnishes; Raw Materials: Resins, Solvents and Colouring Principles; Drying Oils: their Properties, Applications and Preparation by both Hot and Cold Processes; Manufacture, Employment and Testing of Different Varnishes. Translated from the French of ACH. LIVACHE, Ingenieur Civil des Mines. Greatly Extended and Adapted to English Practice, with numerous Original Recipes. By JOHN GEDDES MCINTOSH, Lecturer on Oils, Colours and Varnishes, Regent Street Polytechnic. Twenty-seven Illustrations. 400 pp. Demy 8vo. 1899. Price 12s. 6d.; India and Colonies, 13s. 6d.; Other Countries, 15s.; strictly net.

=Contents.=

I. Resins: Gum Resins, Oleo Resins and Balsams, Commercial Varieties, Source, Collection, Characteristics, Chemical Properties, Physical Properties, Hardness, Adulterations. Appropriate Solvents, Special Treatment, Special Use.—II. Solvents: Natural, Artificial, Manufacture, Storage, Special Use.—III. Colouring: Principles, (1) Vegetable, (2) Coal Tar, (3) Coloured Resinates, (4) Coloured Oleates and Linoleates.—Gum Running: Furnaces, Bridges, Flues, Chimney Shafts, Melting Pots, Condensers, Boiling or Mixing Pans, Copper Vessels, Iron Vessels (Cast), Iron Vessels (Wrought), Iron Vessels (Silvered), Iron Vessels (Enamelled), Steam Superheated Plant, Hot-air Plant.—Spirit Varnish Manufacture: Cold Solution Plant, Mechanical Agitators, Hot Solution Plant, Jacketted Pans, Mechanical Agitators, Clarification and Filtration, Bleaching Plant, Storage Plant.—Manufacture, Characteristics and Uses of the Spirit Varnishes yielded by: Amber, Copal, Dammar, Shellac, Mastic, Sandarac, Rosin, Asphalt, India Rubber, Gutta Percha, Collodion, Celluloid, Resinates, Oleates.—Manufacture of Varnish Stains.—Manufacture of Lacquers.—Manufacture of Spirit Enamels.—Analysis of Spirit Varnishes.—Physical and Chemical Constants of Resins. —Table of Solubility of Resins in different Menstrua.—Systematic qualitative Analysis of Resins, Hirschop's tables.—Drying Oils: Oil Crushing Plant, Oil Extraction Plant, Individual Oils, Special Treatment of Linseed Oil, Poppyseed Oil, Walnut Oil, Hempseed Oil, Llamantia Oil, Japanese Wood Oil, Gurjun Balsam, Climatic Influence on Seed and Oil.—Oil Refining: Processes, Thenard's, Liebig's, Filtration, Storage, Old Tanked Oil.—Oil Boiling: Fire Boiling Plant, Steam Boiling Plant, Hot-Air Plant, Air Pumps, Mechanical Agitators, Vincent's Process, Hadfield's Patent, Storer's Patent, Walton's Processes, Continental Processes, Pale Boiled Oil, Double Boiled Oil, Hartley and Blenkinsop's Process.—Driers: Manufacture, Special Individual Use of (1) Litharge, (2) Sugar of Lead, (3) Red Lead, (4) Lead Borate, (5) Lead Linoleate, (6) Lead Resinate, (7) Black Oxide of Manganese, (8) Manganese Acetate, (9) Manganese Borate, (10) Manganese Resinate, (II) Manganese Linoleate, Mixed Resinates and Linoleates, Manganese and Lead, Zinc Sulphate, Terebine, Liquid Driers.—Solidified Boiled Oil.—Manufacture of Linoleum.—Manufacture of India Rubber Substitutes.—Printing Ink Manufacture—Lithographic Ink Manufacture.—Manufacture of Oil Varnishes.—Running and Special Treatment of Amber, Copal, Kauri, Manilla.—Addition of Oil to Resin.—Addition of Resin to Oil.—Mixed Processes.—Solution in Cold of previously Fused Resin.—Dissolving Resins in Oil, etc., under pressure.—Filtration.—Clarification.—Storage.—Ageing.—Coach-makers' Varnishes and Japans.—Oak Varnishes.—Japanners' Stoving Varnishes.—Japanners' Gold Size.—Brunswick Black.—Various Oil Varnishes.—Oil-Varnish Stains.—Varnishes for "Enamels".-India Rubber Varnishes.—Varnishes Analysis: Processes, Matching.—Faults in Varnishes: Cause, Prevention.—Experiments and Exercises.

=Press Opinions.=

"There is no question that this is a useful book."—Chemist and Druggist.

"The different formulae which are quoted appear to be far more 'practical' than such as are usually to be found in text-books: and assuming that the original was published two or three years ago, and was only slightly behindhand in its information, the present volume gives a fair insight into the position of the varnish industry."—The Ironmonger.

=Letter from the Teacher of a Technical Class.=

"As a teacher I have often been consulted as to the best work on Varnish Manufacture and kindred industries, and have been at a loss in recommending a really practical one. It is therefore with pleasure that I can now testify as to the merits of the book on these subjects by A. Livache and J.G. McIntosh recently published by Messrs. Scott, Greenwood & Co. In my opinion no varnish maker ought to be without it; moreover, it is the best text-book that could be put into the hands of trade students or beginners. It has also the merits of being thoroughly up-to-date and of possessing a remarkably comprehensive index. I can conscientiously recommend it to my students and trade friends."—CHARLES HARRISON, Lecturer on the Manufacture of Painters' Oils, Colours and Varnishes, Borough Polytechnic, Borough Road, S.E. "23rd May, 1899"

=THE MANUFACTURE OF LAKE PIGMENTS FROM ARTIFICIAL COLOURS.= By FRANCIS H. JENNISON, F.I.C., F.C.S. =Sixteen Coloured Plates, showing Specimens of Eighty-nine Colours, specially prepared from the Recipes given in the Book.= 136 pp. Demy 8vo. 1900. Price 7s. 6d.; India and Colonies, 8s.; Other Countries, 8s. 6d.; strictly net.

=Contents.=

Chapters I., Introduction.—II., The Groups of the Artificial Colouring Matters.—III., The Nature and Manipulation of Artificial Colours.—IV., Lake-forming Bodies for Acid Colours. —V., Lake-forming Bodies' Basic Colours.—VI., Lake Bases.—VII., The Principles of Lake Formation.—VIII., Red Lakes.—IX., Orange, Yellow, Green, Blue, Violet and Black Lakes. —X., The Production of Insoluble Azo Colours in the Form of Pigments.—XI., The General Properties of Lakes Produced from Artificial Colours.—XII., Washing, Filtering and Finishing. —XIII., Matching and Testing Lake Pigments.—Index.

=Press Opinions.=

"It is evidently the result of prolonged research, and cannot but prove a valuable consulting work to those engaged in the industry."—Derby Mercury.

"The practical portion of the volume is the one which will especially commend itself, as that is the part of the subject which most readers would buy the book for."—Chemist and Druggist.

"This work just issued is a very valuable treatise on the manufacture of lake pigments of the coal-tar series principally. The plan adopted by the author in writing up the subject enables the manufacture to be very readily understood.... The general properties of lakes produced from artificial colours, washing, filtering and finishing, and matching and testing lake pigments are well and exhaustively described, so that no manufacturer or user of lake pigments can well afford to be without this work."—Chemical Trade Journal.

"This is undoubtedly a book which will occupy a very high place amongst technical works, and will prove of exceptional value to all whom it immediately concerns. We have no hesitation in recommending it as one of the best works of its class we have ever read. Mr. Jennison has set about his task with a lucid style, and with a complete mastery of his subject. .. We do not think students of the technical side of the paint and colour industry can possibly spend 7s. 6d. in a more profitable way than by buying this publication."—Eastern Morning News.

=THE TESTING AND VALUATION OF RAW MATERIALS USED IN PAINT AND COLOUR MANUFACTURE.= By M.W. JONES, F.C.S. A Book for the Laboratories of Colour Works. 88 pp. Crown 8vo. 1900. Price 5s.; India and Colonies, 5s. 6d.; Other Countries, 6s.; strictly net.

=Contents.=

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.

"Mr. Parry has done good service in carefully collecting and marshalling the results of the numerous researches published in various parts of the world."—Pharmaceutical Journal.

"At various times monographs have been printed by individual workers, but it may safely be said that Mr. Parry is the first in these latter days to deal with the subject in an adequate manner. His book is well conceived and well written.... He is known to have sound practical experience in analytical methods, and he has apparently taken pains to make himself au fait with the commercial aspects of the subject."—Chemist and Druggist.

"Mr. Parry's reputation as a scientist is fully established, and we can therefore accept any work emanating from his pen as being of the greatest practical value. We have perused the work before us with much care, and are convinced that the contents will be found most serviceable and its publication most opportune.... He avoids unnecessary details, but includes everything that is essential to systematic treatment, while he attempts no more 'than to give an outline of the principles involved'.... We congratulate Mr. Parry on the scientific value of his work, and hope that if the progress of the colonies in the manufacture of essential oils and perfumes equals what we are justified in expecting, it will become an Australian handbook, everywhere appreciated."—The Australian Brewers' Journal.

=DRYING OILS, BOILED OIL AND SOLID AND LIQUID DRIERS.= By L.E. ANDES. A Practical Work for Manufacturers of Oils, Varnishes, Printing Inks, Oilcloth and Linoleum, Oilcakes, Paints, etc. Expressly Written for this Series of Special Technical Books, and the Publishers hold the Copyright for English and Foreign Editions. Forty-two Illustrations. 360 pp. 1901. Demy 8vo. Price 12s. 6d.; India and Colonies, 13s. 6d.; Other Countries, 15s.; strictly net.

=Contents.=

Chapters I., General Chemical and Physical Properties of the Drying Oils; Cause of the Drying Property; Absorption of Oxygen: Behaviour towards Metallic Oxides, etc.—II., The Properties of and Methods for obtaining the Drying Oils.—III., Production of the Drying Oils by Expression and Extraction: Refining and Bleaching; Oil Cakes and Meal: The Refining and Bleaching of the Drying Oils; The Bleaching of Linseed Oil.—IV., The Manufacture or Boiled Oil; The Preparation of Drying Oils for Use in the Grinding of Paints and Artists' Colours and in the Manufacture of Varnishes by Heating over a Fire or by Steam, by the Cold Process, by the Action of Air, and by Means of the Electric Current; The Driers used in Boiling Linseed Oil; The Manufacture of Boiled Oil and the Apparatus therefor; Livache's Process for Preparing a Good Drying Oil and its Practical Application.—V., The Preparation of Varnishes for Letterpress, Lithographic and Copperplate Printing, for Oilcloth and Waterproof Fabrics: The Manufacture of Thickened Linseed Oil, Burnt Oil, Stand Oil by Fire Heat, Superheated Steam, and by a Current of Air.—VI., Behaviour of the Drying Oils and Boiled Oils towards Atmospheric Influences, Water, Acids and Alkalies.—VII., Boiled Oil Substitutes.—VIII., The Manufacture of Solid and Liquid Driers from Linseed Oil and Rosin; Linolic Acid Compounds of the Driers.—IX., The Adulteration and Examination of the Drying Oils and Boiled Oil.

REISSUE OF =CHEMICAL ESSAYS OF C.W. SCHEELE.= First Published in English in 1786. Translated from the Academy of Sciences at Stockholm, with Additions. 300 pp. Demy 8vo. 1901. Price 5s.; India and Colonies, 5s. 6d.; Other Countries, 6s.; strictly net.

=Contents.=

Memoir; C.W. Scheele and his work (written for this edition).—Chapters I., On Fluor Mineral and its Acid.—II., On Fluor Mineral.—III., Chemical Investigation of Fluor Acid, with a View to the Earth which it Yields, by Mr. Wiegler.—IV., Additional Information Concerning Fluor Minerals.—V., On Manganese, Magnesium, or Magnesia Vitrariorum.—VI., On Arsenic and its Acid.—VII., Remarks upon Salts of Benzoin—VIII., On Silex, Clay and Alum.—IX., Analysis of the Calculus Vesical.—X., Method of Preparing Mercurius.

Dulcis Via Humida.—XI., Cheaper and more Convenient Method of Preparing Pulvis Algarothi.—XII., Experiments upon Molybdaena.—XIII., Experiments on Plumbago.—XIV., Method of Preparing a New Green Colour.—XV., Of the Decomposition of Neutral Salts by Unslaked Lime and Iron.—XVI., On the. Quantity of Pure Air which is Daily Present in our Atmosphere.—XVII., On Milk and its Acid.—XVIII., On the Acid of Saccharum Lactis. —XIX., On the Constituent Parts of Lapis Ponderosus or Tungsten.—XX., Experiments and Observations on Ether.

=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.=

Chapters I., =Constitution and Properties: Definitions and Sources, Gelatine, Chondrin and Allied Bodies, Physical and Chemical Properties, Classification, Grades and Commercial Varieties.—II., =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. —III., =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.—IV., =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.—V., =Glue Testing=: Review of Processes, Chemical Examination, Adulteration, Physical Tests, Valuation of Raw Materials.—VI., =Commercial= =Aspects.=

=Press Opinions.=

"This work is of the highest technical character, and gives not only a full and practical account of the raw materials and manufacture of glues, gelatines and similar substances, but gives many hints and information on the use of such substances in veneering, carpentry and many other purposes. Many tests are given for glue in different stages of the progress of its manufacture, and the commercial value of a commodity so much in general use is exemplified by statistics and figures. It is certainly a valuable treatise upon an article for which very little literature in any form has previously been obtainable."—Carpenter and Builder.

"Books on the art of glue making are more than usually scarce, and users of that article, as well as those who may be tempted to embark in the industry, should therefore welcome this book by Dr. Samuel Rideal, a Fellow of the Institute of Chemistry, and a leading authority. In this book he has collected the more important facts connected with the manufacture of glue and allied products, and stated the experience he has gained in examining various commercial samples during the past ten years.... Dr. Rideal's book must be regarded as a valuable contribution to other technical literature, which manufacturers, merchants and users may study with profit."—British Trade Journal.

"This volume is the latest addition to the excellent series of special technical works for manufacturers and professional and commercial men issued by the well-known publishers of The Oil and Colourman's Journal. The volume in every way fully maintains the high standard of excellence of the whole series, and deals with the subject of glue making and glue testing in a thoroughly exhaustive manner. Chapters are given on the constitution and properties, and raw material and manufacture, and of the uses of glue, and in this latter respect it will doubtless be information to many readers to learn to what extent glue enters into the manufacture of many commercial products not apparently associated with glue. Exhaustive chapters on the processes and methods of glue testing, and on its commercial aspects, complete this useful and most carefully prepared volume."—Carriage Builders' Journal.

=TECHNOLOGY OF PETROLEUM=: Oil Fields of the World—Their History, Geography and Geology—Annual Production and Development—Oil-well Drilling—Transport. By HENRY NEUBERGER and HENRY NOALHAT. Translated from the French by J. G. MCINTOSH. 550 pp. 153 Illustrations. 26 Plates. Royal 8vo. 1901. Price 21s.; India and Colonies, 22s.; Other Countries, 23s. 6d.; strictly net.

=Contents.=