Chapter 25

With photomicrographs and other Illustrations. _Net_ =5/0=

CONTENTS:--EARLY BEATING APPLIANCES--THE HOLLANDER--THE ECONOMY OF BEATING--DIFFICULTIES OF ARRIVING AT DEFINITE RESULTS--BEHAVIOUR OF DIFFERENT FIBRES--"REFINING"--POWER CONSUMPTION--A COMPARISON OF TWO DIFFERENT KINDS OF BEATERS--POWER CONSUMED IN THE "BREAKING," "BEATING," AND "REFINING" OF DIFFERENT MATERIALS--DEALING WITH THE "CIRCULATION" AND "AGITATION" IN A HOLLANDER--COMPARISONS OF LARGE AND MEDIUM-SIZED HOLLANDERS WHEN BEATING "HARD" AND "SOFT" STOCK--TRIALS TO DETERMINE THE RELATIVE MERITS OF STONE AND METAL BEATER-BARS--TRIALS WITH BREAKERS, REED BEATERS, AND KINGSLAND REFINERS--A SYSTEM OF BEATING COMBINED WITH A SYSTEM FOR CONTINUOUS BLEACHING--BEATERS AND REFINERS--POWER CONSUMED IN GRINDING WOOD-PULP--THE REDUCTION IN LENGTH OF FIBRES AT DIFFERENT STAGES OF BEATING--METHOD FOR DETERMINING THE "WETNESS" OF BEATEN STUFF--THE POSITION OF BEATERS IN OLD AND MODERN PAPER-MILLS--APPENDIX.

=PARA RUBBER. ITS CULTIVATION & PREPARATION.= By W. H. JOHNSON, F.L.S., Ex-Director of Agriculture, Gold Coast Colony, West Africa, Director of Agriculture, Mozambique Company, East Africa, Commissioned by Government in 1902 to visit Ceylon to Study the Methods employed there in the Cultivation and Preparation of Para Rubber and other Agricultural Staples for Market, with a view to Introduce them into West Africa. Second Edition, rewritten and greatly enlarged, with numerous illustrations. Demy 8vo, cloth _Net_ =7/6=

THE WORLD'S PRODUCTION AND CONSUMPTION OF RUBBER--THE PARA RUBBER TREE AT HOME AND ABROAD--PROPAGATION--PLANTING AND CULTIVATING--SOILS AND MANURES--PESTS--LATEX--COLLECTING THE LATEX--RUBBER MANUFACTURE--THE ANTISEPTICISATION OF RUBBER--DRYING AND PACKING RUBBER FOR EXPORT--YIELD OF PARA RUBBER FROM CULTIVATED TREES--ESTABLISHMENT AND MAINTENANCE OF A PARA RUBBER PLANTATION--COMMERCIAL VALUE OF THE OIL IN HEVEA SEEDS.

=PASTRYCOOK AND CONFECTIONER'S GUIDE.= For Hotels, Restaurants, and the Trade in general, adapted also for Family Use. By R. WELLS, Author of "The Bread and Biscuit Baker" =1/0=

=PETROL AIR GAS.= A Practical Handbook on the Installation and Working of Air Gas Lighting Systems for Country Houses. By HENRY O'CONNOR, F.R.S.E., A.M. Inst. C.E., &c., author of "The Gas Engineer's Pocket Book." 80 pages with illustrations. Crown 8vo, cloth _Net_ =1/6=

DESCRIPTION OF PREVIOUS PLANTS AND SYSTEMS FOR COUNTRY-HOUSE LIGHTING, DIFFICULTIES WITH, OBJECTIONS AND PRICES--HISTORY OF PETROL GAS, COMPARATIVE COSTS--PETROL, ITS NATURE, DANGERS, AND STORING, NOTES ON THE LAW REGARDING SAME--BURNERS, DESCRIPTION OF SAME, PIPING, MANTLES--GENERAL PRINCIPLES OF PARTS OF PLANTS--MOTIVE POWER METERS--WEIGHT-DRIVEN PLANTS--ROOT'S BLOWERS--HOT-AIR ENGINES--PELTON WATER-WHEELS--DESCRIPTIONS OF VARIOUS PLANTS--EXTRACT FROM AN ACT FOR THE SAFE-KEEPING OF PETROLEUM AND OTHER SUBSTANCES OF A LIKE NATURE--APPENDIX--USEFUL NOTES.

=PETROLEUM. THE OIL FIELDS OF RUSSIA AND THE RUSSIAN PETROLEUM INDUSTRY.= A Practical Handbook on the Exploration, Exploitation, and Management of Russian Oil Properties, the Origin of Petroleum in Russia, the Theory and Practice of Liquid Fuel. By A. B. THOMPSON, A.M.I.M.E., F.G.S. 415 pp., with numerous Illustrations and Photographic Plates. Second Edition Revised. Super-royal 8vo, cloth _Net_ =21/0=

=PETROLEUM MINING AND OIL-FIELD DEVELOPMENT.= A Guide to the Exploration of Petroleum Lands, and a Study of the Engineering Problems connected with the Winning of Petroleum. Including Statistical Data of important Oil Fields. Notes on the Origin and Distribution of Petroleum, and a description of the Methods of Utilizing Oil and Gas Fuels. By A. BEEBY THOMPSON, A.M.I.Mech.E., F.G.S. Author of "The Oil Fields of Russia." 384 pages, 114 illustrations, including 22 full-page plates. Demy 8vo, cloth. [_Just Published._] _Net_ =15/0=

"It is an admirable text-book by a competent authority on an interesting subject."--_Mining Magazine._

"The present effort is likely to receive a warm welcome in engineering circles, and it can be cordially commended for perusal. It will doubtless have that large sale to which its merits entitle it."--_Mining World._

"The general aspects of the Petroleum Industry are fully and ably laid out."--_Engineer._

=PIGMENTS, ARTISTS' MANUAL OF.= Showing their Composition, Conditions of Permanency, Non-Permanency, and Adulterations, etc., with Tests of Purity. By H. C. STANDAGE. Third Edition. Crown 8vo, cloth =2/6=

=PORTLAND CEMENT, THE MODERN MANUFACTURE OF.= By PERCY C. H. WEST, Chemical Engineer and Consulting Chemist. In Three Volumes. Vol. I., dealing with "Machinery and Kilns." About 200 pages, Medium 8vo. With numerous Illustrations. [_Nearly ready, price about_] =10/6=

=PRODUCER GAS PRACTICE (AMERICAN) AND INDUSTRIAL GAS ENGINEERING.= By NISBET LATTA, M.Amer.Soc.M.E., M.Amer.Gas Inst. 558 pages, with 247 illustrations. Demy 4to, cloth [_Just Published._] _Net_ =25/-=

PRODUCER OPERATION--CLEANING THE GAS--WORKS DETAILS--PRODUCER TYPES--MOVING GASES--SOLID FUELS--PHYSICAL PROPERTIES OF GASES--CHEMICAL PROPERTIES OF GASES--GAS ANALYSIS--GAS POWER--GAS ENGINES--INDUSTRIAL GAS APPLICATIONS--FURNACES AND KILNS--BURNING LIME AND CEMENT--PRE-HEATING AIR--DOHERTY COMBUSTION ECONOMISER--COMBUSTION IN FURNACES--HEAT: TEMPERATURE, RADIATION AND CONDUCTION--HEAT MEASUREMENTS: PYROMETRY AND CALORIMETRY--PIPES, FLUES, AND CHIMNEYS--MATERIALS: FIRE CLAY, MASONRY, WEIGHTS AND ROPE--USEFUL TABLES--OIL FUEL PRODUCER GAS.

=RECIPES, FORMULAS AND PROCESSES, TWENTIETH CENTURY BOOK OF.= Edited by GARDNER D. Hiscox, M.E. Nearly 10,000 Scientific, Chemical, Technical, and Household Recipes, Formulas and Processes for Use in the Laboratory and the Office, the Workshop and the Home. Medium 8vo, 800 pp., cloth. _Net_ =12/6=

SELECTED LIST OF CONTENTS:--ABSINTHE--ACID PROOFING--ADHESIVES-- ALCOHOL--ALKALI--ALLOYS--ALUMINIUM--AMMONIA--ANILINE--ANTIDOTES FOR POISON--ANCHOVY PREPARATIONS--ANTISEPTICS--ANTIQUES--BAKING POWDERS-- AROMETERS--BEVERAGES--BLEACHING--BRASS--BRICK--CARBOLIC ACIDS--CASTING-- CELLULOID--CHEESE--CERAMICS--CIGARS--COFFEE--CONDIMENTS--COPPER-- COSMETICS--COTTON--DIAMOND TESTS--DONARITE--DYES--ELECTRO PLATING-- EMBALMING--ENAMELLING--ENGRAVING--ESSENCES--EXPLOSIVES--FERTILISERS-- FILTERS--FOOD ADULTERANTS--GELATINE--GLASS--GOLD--GUMS--HARNESS DRESSINGS--HORN--INKS--INSECTICIDES--IRON--IVORY--JEWELLERS' FORMULAS-- LACQUERS--LAUNDRY PREPARATIONS--LEATHER--LINOLEUM--LUBRICANTS-- MATCHES--METALS--MUSIC BOXES--OILS--PAINTS--PAPER--PERFUMES--PETROLEUM-- PHOTOGRAPHY--PLASTER--PLATING--POLISHES--PORCELAIN--POULTRY--PUTTY--RAT POISONS--REFRIGERATION--ROPES--RUBBER--RUST PREVENTIVES--SALT--SCREWS-- SILK--SILVER--SOAPS--SOLDERS--SPIRIT--SPONGES--STEEL--STONE-- THERMOMETERS--TIN--VALVES--VARNISHES--VETERINARY FORMULAS--WATCHMAKERS' FORMULAS--WATERPROOFING--WAX--WEIGHTS AND MEASURES--WHITEWASH-- WOOD--YEAST.

=RUBBER HAND STAMPS.= And the Manipulation of Rubber. A Practical Treatise on the Manufacture of Indiarubber Hand Stamps, Small Articles of Indiarubber, The Hektograph, Special Inks, Cements, and Allied Subjects. By T. O'CONOR SLOANE A.M., Ph.D. With numerous Illustrations. Square 8vo, cloth =5/0=

=SAVOURIES AND SWEETS.= Suitable for Luncheons and Dinners. By Miss M. L. Allen (Mrs. A. Macaire), Author of "Breakfast Dishes," etc. Thirty-first Edition. F'cap 8vo, sewed =1/0= Or, quarter bound, fancy boards =1/6=

=SHEET METAL-WORKER'S GUIDE.= A Practical Handbook for Tinsmiths, Coppersmiths, Zincworkers, &c., with 46 Diagrams and Working Patterns. By W. J. E. CRANE. Crown 8vo, Cloth =1/6=

=SHEET METAL-WORKER'S INSTRUCTOR.= Comprising Geometrical Problems and Practical Rules for Describing the Various Patterns Required by Zinc, Sheet-Iron, Copper, and Tin-Plate Workers. By R. H. WARN. Third Edition. Revised and Further Enlarged by J. G. HORNER, A.M.I.M.E. Crown 8vo, 280 pp., with 465 Illustrations, cloth =7/6=

=SILVERSMITH'S HANDBOOK.= Alloying and Working of Silver, Refining and Melting, Solders, Imitation Alloys, Manipulation, Prevention of Waste, Improving and Finishing the Surface of the Work, etc. By GEORGE E. GEE. Fourth Edition Revised, Crown 8vo, cloth =3/0=

=SOAP-MAKING.= A Practical Handbook of the Manufacture of Hard and Soft Soaps, Toilet Soaps, etc. With a Chapter on the Recovery of Glycerine from Waste Leys. By ALEXANDER WATT. Seventh Edition, including an Appendix on Modern Candlemaking. Crown 8vo, cloth =7/6=

"The work will prove very useful, not merely to the technological student, but to the soap boiler who wishes to understand the theory of his art."--_Chemical News._

=SOAPS, CANDLES, and GLYCERINE.= A Practical Manual of Modern Method of Utilisation of Fats and Oils in the Manufacture of Soap and Candles, and of the recovery of Glycerine. By L. L. LAMBORN, Massachusetts Institute of Technology, M.Am.C.S. Medium 8vo, cloth. Fully Illustrated. 706 pages _Net_ =30/0=

THE SOAP INDUSTRY--RAW MATERIALS--BLEACHING AND PURIFICATION OF SOAP-STOCK--THE CHEMICAL CHARACTERISTICS OF SOAP-STOCK AND THEIR BEHAVIOUR TOWARDS SAPONIFYING AGENTS--MECHANICAL EQUIVALENT OF THE SOAP FACTORY--COLD PROCESS AND SEMI-BOILED SOAP--GRAINED SOAP--SETTLED ROSIN SOAP--MILLED SOAP-BASE--FLOATING SOAP--SHAVING SOAP--MEDICATED SOAP--ESSENTIAL OILS AND SOAP PERFUMERY--MILLED SOAP--CANDLES-- GLYCERINE--EXAMINATION OF RAW MATERIALS AND FACTORY PRODUCTS.

=SOLUBILITIES OF INORGANIC AND ORGANIC SUBSTANCES.= A Hand-book of the most Reliable Quantitative Solubility Determinations. Recalculated and Compiled by ATHERTON SEIDELL, Ph.D., Chemist, Hygienic Laboratory, U. S. Public Health Service, Washington, D C. Medium 8vo, cloth, 377 pages _Net_ =12/6=

=TEA MACHINERY AND TEA FACTORIES.= Describing the Mechanical Appliances required in the Cultivation and Preparation of Tea for the Market. By A. J. WALLIS-TAYLER, A.M.Inst.C.E. Medium 8vo, 468 pp. With 218 Illustrations _Net_ =25/0=

"The subject of tea machinery is now one of the first interest to a large class of people, to whom we strongly commend the volume."--_Chamber of Commerce Journal._

=WAGES TABLES.= At 54, 52, 50, and 48 Hours per Week. Showing the Amounts of Wages from one quarter of an hour to sixty-four hours, in each case at Rates of Wages advancing by One Shilling from 4s. to 55s. per week. By THOS. CARBUTT, Accountant. Square crown, 8vo, half-bound =6/0=

=WATCH REPAIRING, CLEANING, AND ADJUSTING.= A Practical Handbook dealing with the Materials and Tools Used, and the Methods of Repairing, Cleaning, Altering, and Adjusting all kinds of English and Foreign Watches, Repeaters, Chronographs, and Marine Chronometers. By F. J. GARRARD, Springer and Adjuster of Marine Chronometers and Deck Watches for the Admiralty. Second Edition. Revised. With over 200 Illustrations. Crown 8vo, cloth _Net_ =4/6=

=WATCHES AND OTHER TIMEKEEPERS, HISTORY OF.= By J. F. KENDAL, M.B.H. Inst. =1/6= boards; or cloth =2/6=

=WATCHMAKER'S HANDBOOK.= Intended as a Workshop Companion for those engaged in Watchmaking and the Allied Mechanical Arts. Translated from the French of CLAUDIUS SAUNIER, and enlarged by JULIEN TRIPPLIN, F.R.A.S., and EDWARD RIGG, M.A., Assayer in the Royal Mint. Fourth Edition. Cr. 8vo, cloth =9/0=

"Each part is truly a treatise in itself. The arrangement is good and the language is clear and concise. It is an admirable guide for the young watchmaker."--_Engineering._

=WEIGHT CALCULATOR.= Being a Series of Tables upon a New and Comprehensive Plan, exhibiting at one Reference the Exact Value of any Weight from 1 lb. to 15 tons, at 300 Progressive Rates, from 1d. to 168s. per cwt., and containing 186,000 Direct Answers, which, with their Combinations, consisting of a single addition (mostly to be performed at sight), will afford an aggregate of 10,266,000 Answers; the whole being calculated and designed to ensure correctness and promote despatch. By HENRY HARBEN, Accountant. Sixth edition, carefully corrected. Royal 8vo, strongly half bound =£1 5s.=

"A practical and useful work of reference for men of business generally."--_Ironmonger._

"Of priceless value to business men."--_Sheffield Independent._

=WOOD ENGRAVING.= A Practical and Easy Introduction to the Study of the Art. By W. N. BROWN. Crown 8vo, cloth. =1/6=

HANDYBOOKS FOR HANDICRAFTS.

BY PAUL N. HASLUCK.

Author of "Lathe Work," etc. Crown 8vo, 144 pp., price 1s. each.

[symbol: right pointing hand]_These_ HANDYBOOKS _have been written to supply information for_ WORKMEN STUDENTS, _and_ AMATEURS _in the several Handicrafts, on the actual_ PRACTICE _of the_ WORKSHOP, _and are intended to convey in plain language_ TECHNICAL KNOWLEDGE _of the several_ CRAFTS. _In describing the processes employed, and the manipulation of material, workshop terms are used; workshop practice is fully explained; and the text is freely illustrated with drawings of modern tools, appliances, and processes._

=METAL TURNER'S HANDYBOOK.= A Practical Manual for Workers at the Foot-Lathe. With 100 Illustrations =1/0=

"The book displays thorough knowledge of the subject."--_Scotsman._

=WOOD TURNER'S HANDYBOOK.= A Practical Manual for Workers at the Lathe. With 100 Illustrations =1/0=

"We recommend the book to young turners and amateurs."--_Mechanical World._

=WATCH JOBBER'S HANDYBOOK.= A Practical Manual of Cleaning, Repairing, and Adjusting. With 100 Illustrations =1/0=

"All connected with the trade should acquire and study this work."--_Clerkenwell Chronicle._

=PATTERN MAKER'S HANDYBOOK.= A Practical Manual on the Construction of Patterns. With 100 Illustrations =1/0=

"A most valuable, if not indispensable, manual for the pattern-maker."--_Knowledge._

=MECHANIC'S WORKSHOP HANDYBOOK.= A Practical Manual on Mechanical Manipulation, embracing Information on various Handicraft Processes. With Useful Notes and Miscellaneous Memoranda. Comprising about 200 Subjects =1/0=

"Should be found in every workshop, and in all technical Schools."--_Saturday Review._

=MODEL ENGINEER'S HANDYBOOK.= A Practical Manual on the Construction of Model Steam Engines. With upwards of 100 Illustrations =1/0=

"Mr. Hasluck has produced a very good little book."--_Builder._

=CLOCK JOBBER'S HANDYBOOK.= A Practical Manual on Cleaning, Repairing, and Adjusting. With 100 Illustrations =1/0=

"It is of inestimable service to those commencing the trade."--_Coventry Standard._

=CABINET WORKER'S HANDYBOOK.= A Practical Manual on the Tools, Materials, Appliances, and Processes employed in Cabinet Work. With upwards of 100 Illustrations =1/0=

"Amongst the most practical guides for beginners in cabinet-work."--_Saturday Review._

=WOODWORKER'S HANDYBOOK.= Embracing information on the Tools, Materials, Appliances and Processes Employed in Woodworking. With 104 Illustrations =1/0=

"Written by a man who knows, not only how work ought to be done, but how to do it, and how to convey his knowledge to others."--_Engineering._

"Mr. Hasluck writes admirably, and gives complete instructions."--_Engineer._

"Mr. Hasluck combines the experience of a practical teacher with the manipulative skill and scientific knowledge of processes of the trained mechanician, and the manuals are marvels of what can be produced at a popular price."--_Schoolmaster._

"Helpful to workmen of all ages and degrees of experience."--_Daily Chronicle._

BRADBURY, AGNEW, & CO. LD., LONDON AND TONBRIDGE. (391.25.5.10.)

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MATHEMATICS, ARITHMETIC, &c.

Geometry, Descriptive. J. F. HEATHER 2/- Practical Plane Geometry. J. F. HEATHER 2/- Analytical Geometry. J. HANN & J. R. YOUNG 2/- Geometry. Part I. (Euclid, Bks. I.--III.) H. LAW 1/6