20 WORKS IN MATHEMATICS, ETC., 



Compound Interest and Annuities. 



THEORY of COMPOUND INTEREST and ANNUITIES ; 



with Tables of Logarithms for the more Difficult Computations of 



Interest, Discount, Annuities, &c., in all their Applications and 



Uses for Mercantile and State Purposes. By FEDOR THOMAN, 



of the Societe Credit Mobilier, Paris. 3rd Edit., I2mo, 4*. 6d. cl. 



" A very powerful work, and the Author has a very remarkable command of his 



subject." Professor A. de Morgan. 



Iron and Metal Trades' Calculator. 



THE IRON AND METAL TRADES' COMPANION : 

 Being a Calculator containing a Series of Tables upon a new and 

 comprehensive plan for expeditiously ascertaining the value of any 

 goods bought or sold by weight, from 15. per cwt. to II2J. per 

 cwt., and from one farthing per lb. to u. per Ib. Each Table ex- 

 tends from one lb. to 100 tons. ByT. DOWN IE. 396 pp., 9.5-., leather. 

 " A most useful set of tables, and will supply a want, for nothing like them before 

 existed. " Building News. 



Iron and Steel. 



'IRON AND STEEL': a Work for the Forge, Foundry, 

 Factory, and Office. Containing Information for Ironmasters and 

 their Stocktakers ; Managers of Bar, Rail, Plate, and Sheet Rolling 

 Mills ; Iron and Metal Founders ; Iron Ship and Bridge Builders ; 

 Mechanical, Mining, and Consulting Engineers ; Architects, Builders, 

 &c. By CHARLES HOARE, Author of 'The Slide Rule,' &c. Eighth 

 Edition. With folding Scales of "Foreign Measures compared 

 with the English Foot," and "fixed Scales of Squares, Cubes, 

 and Roots, Areas, Decimal Equivalents, &c." Oblong, 321110, 6s. , 

 leather, elastic-band. 

 " For comprehensiveness the book has not its equal." Iron. 



Comprehensive Weight Calculator. 



THE WEIGHT CALCULATOR; being a Series of Tables 

 upon a New and Comprehensive Plan, exhibiting at one Reference 

 the exact Value of any Weight from lib. to 15 tons, at 300 Pro- 

 gressive Rates, from I Penny to 168 Shillings per cwt., and con- 

 taining 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, Sheffield. New 

 Edition. Royal 8vo, I/. 55. , strongly half-bound. 



Comprehensive Discount G^t^de. 



THE DISCOUNT GUIDE : comprising several Series of Tables 

 for the use of Merchants, Manufacturers, Ironmongers, and others, 

 by which may be ascertained the exact profit arising from any mode 

 of using Discounts, either in the Purchase or Sale of Goods, and 

 the method of either Altering a Rate of Discount, or Advancing a 

 Price, so as to produce, by one operation, a sum that will realise 

 any required profit after allowing one or more Discounts : to which 

 are added Tables of Profit or Advance from \\ to 90 per cent., 

 Tables of Discount from \\ to 98! per cent., and Tables of Commis- 

 sion, &c., from | to 10 per cent. By HENRY HARBEN, Accountant. 

 New Edition. Demy STO, I/. 5^., half-bound. 



