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  • SEXTON'S

    BOII^UMAK:ERS,

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    :»M*A^ii ,k/^^i^,^^>^^^.l-v^t: >H.^ri* \JmMk

  • 2;Adam Street,

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    Londoro,W.C.2.

    SCOTT LIBRARY COLLECTION

    JulyJ930.This Book must nor be removed From The Library*

  • Digitized by the Internet Archive

    in 2012 with funding from

    Gordon Bell

    http://archive.org/details/sextonsboilermakOOsext

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    tV » 2i91G » , 22£ „

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    91666•08333 •16666 •25 •33333 •41666 '5 •58333 •66666 '-75 1' 83333_1_ •00521 •08854 •17187 •25521 •33854 •42187 -50521 •58854I-67187 -75521 -83854 92187i •01041 •09374 •17707 •26041 •34374 •42707 '51041 -59374J -67707 '76041 '84374 92707_3_ •01562 •09895 •18228 •26562 •34895 •43228 '51562 -59895 '68228 -76562 -84895 93228

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    This Table will be found very useful in making up the weights ofplates. Example :—What i* theweight of a plate 3 ft. 7£ in. X 2 ft. 5£ in. X i in. Run your eye down the column headed 7 in.until it meets the figures in a line with £ in., which you will find to be -62500, then look downthe column headed 5 in., until it meets the figures opposite i in., wThich you will find to be•43750, then multiply 3*62500 by 2-43750, and multiply the result by 20, that being the numberof lbs. in a square foot of | in. plate. This will produce the figures 175*5187500000, being a verylittle over 1 cwt. 2 qrs. 7£ lbs.

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  • BOOKS RELATINGTO

    APPLIED SCIENCE,PUBLISHED BY

    E. & F. N. SPON,LONDON: 46, CHARINO CROSS.

    NEW YORK: 446, BROOME STREET.

  • Third Edition, 641110, roan, gilt edges, price is.;

    or in cloth case, is. 6d.

    8PON3'TABLES AND MEMORANDA

    FOR ENGINEERS.SELECTED AND ARRANGED BY

    J. T. HURST, C.E.This work is printed in pearl type, and is so small, measuring

    only 2% in. by 2 in., by % in. thick, that it may be easily carriedin the waistcoat pocket.

  • LONDON & NEW YORK: E. & F. N. SPON. 3ALGEBRA SELF-TAUGHT.

    By W. P. Higgs, M.A., D.Sc, LL.D., Assoc. Inst. C.E.,Author of "A Handbook of the Differential Calculus," &c.Crown 8vo, cloth, 2s. 6d.

    Contents

    :

    Symbols and the Signs of Operation—The Equation and the Un-known Quantity—Positive and Negative Quantities—Multiplication-Involution—Exponents—Negative Exponents—Roots, and the Use ofExponents as Logarithms—Logarithms—Tables of Logarithms andProportionate Parts—Transformation of System of Logarithms—Com-mon Uses of Common Logarithms—Compound Multiplicati©n and theBinomial Theorem—Division, Fractions and Ratio—Continued Pro-portion—The Series and the Summation of the Series—Limit of Series—Square and Cube Roots—Equations—List of Formula;, &c.A PRACTICAL TREATISE ON CASTING AND

    FOUNDING, including descriptions of the Modern Ma-chinery Employed in the Art. By N. E. Spretson,Engineer. With 82 Plates drawn to Scale. Demy 8vo, pp.412, cloth, i8j.

  • 4 LONDON & NEW YORK; E. &> F. N. SPON.A HANDBOOK OF FORMULAE, TABLES, AND

    MEMORANDA, for Architectural Surveyors, and othersengaged in Building. By J. T. Hurst, C.E. TwelfthEdition, royal 32010, roan, gilt edges, 5.?.

    Contai

    Formula; and Tables for the :

    Strength of Materials, Ro^fs,Water Supply, Drainage, Gasand other matters useful toArchitects and Builders.

    Information connected with Sani-

    tary EngineerirMer

    Mensuration and the Division of

    Tables of the Weights of Iron andother Building Materials.

    Constants of Labour.

    Valuation of Property.

    Summary of the Practice in Dila-

    Scale of Professional Charges forArchitects and Surveyors.

    Tables of English and FrenchWeights and Measures.

  • LONDON

  • 6 LONDON & NEW YORK: E. £* F. N. SPON.A POCKET-BOOK FOR CHEMISTS, CHEMICAL

    MANUFACTURERS, METALLURGISTS, DYERS,DISTILLERS, BREWERS, SUGAR REFINERS,PHOTOGRAPHERS, STUDENTS, &c, &c. BvThomas Bayley, Assoc. R.C. Sc. Ireland, Analytical andConsulting Chemist, Demonstrator of Practical Chemistry,Analysis, and Assaying, in the Mining School, Bristol.Royal 32ino, roaD, gilt edges, $s.

    Synopsis of Contents:

    Atomic Weights and Factors—Useful Data—Chemical Calculations—Rules for Indirect Analysis—Weights and Measures—Thermometersand Barometers—Chemical Physics— Boiling Points, &c.—Solubility ofSubstances—Methods of Obtaining Specific Gravity—Conversion ofHydrometers-Strength of Solutions by Specific Gravity—Analysis-Gas Analysis—Water Analysis- -Oualiiaiiw Analysis ami ]'.. .1. h ,Volumetric Analysis—Manipulation—Mineralogy—Assaying—Alcohol—Beer—Sugar—Miscellaneous Technological matter relating to Potash,Soda, Sulphuric Acid, Chlorine, Tar Products, Petroleum, Milk, Tallow,Photography, Prices, Wages, &c, &c.

  • LONDON & NEW YORK: E. &* F. N. SPON. 7A PRACTICAL TREATISE ON COAL MINING.

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    Contents :I. Practical Geology— II. Coal: its Mode of Occurrence, Composi-

    imn, ,mil Varieties— III. Searching for Coal—IV. Shaft-sinking-V.Driving of Levels, or Narrow Work—VI. Systems of Working—VII.Getting the Coal-VIII. Haulage—IX. Winding—X. Drainage-XI.Ventilation — XII. Incidental Operations — XIII. Surface Work —XIV. Management and Accounts—XV. Characteristics of the CoalFields of Great Britain and America.

    SPONS' INFORMATION FOR COLONIAL EN-GINEERS. Edited by J. T. Hurst. Demy 8vo, sewed.No. 1. Ceylon. By Abraham Deane, C.E. zs. 6d.

    Contents

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  • 8 LONDON &> NEW YORK: E. &> F. N. SPON.No. 2. Southern Africa, including the Cape Colony,

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  • io LONDON &° NEW YORK: E. & F, N. SPON.TROPICAL AGRICULTURE ;

    Or, The Culture, Preparation, Commerce, and Consump-tion of the Principal Products of the Vegetable Kingdom,as furnishing Food, Clothing, Medicine, &c, and in theirrelation to the Arts and Manufactures ; forming a practicalTreatise and Handbook of Reference for the Colonist,Manufacturer, Merchant, and Consumer, on the Cultivation,Preparation for Shipment, and Commercial Value, &c, ofthe various Substances obtained from Trees and Pl