HENRY SOTHERAN & CO., 140. STRAND. W.C, and 37. PICCADILLY, W. 265 



5196 WALTON (J.) The Catechism of the Author of the Minute Philosopher fully answer'd. 

 with diagrams, sm. 8vo. (pp. 30), sewn {rare), 4» I735 



5197 A Vindication of Sir Isaac Newton's Principles of Fluxions, against the Objections 



contained in the Analyst, sni. 8vo. (pp. 32), sewn (rare), 6s I733 



The above were perhaps the best answers to Bp. Berkeley's attack on the principles of Newton'a fluxlonti calculun 

 (v. N08. 347-8, an^*-). They were unknown to Watt, Alli»x)ne, Poggendorff, etc., but are fUUy discussed by Pn^f Morit« 

 Cantor. 



5198 WALTON (William, Triniti/ Coll., Cantab.) COLLECTION of Problems in Illustration of the 

 Principles of Elementary Mechanics, tmth 5 folding plates, 8vo. el. (used copy), 3* 



Cambridge, 1858 



5199 Collection of Problems in Illustration of the Principles of Theoretical Hydrostatics 



and Hydrodynamics, 3 folding plates, 8vo. el., 3« ibidem, 1847 



5200 Collection of Problems in Illustration of the Principle« of Theoretical Mechanics. 



d folding plates, 8vo. cl., 3s t6., 1842 



5201 Another Copy, hf calf gilt, 3s Qd 



5202 Second Edition [enlarged^, with T folding plates, 8vo. c/., 4* M ib., 1855 



6203 Third [last] Edition [with numerous additional Problems], 1 folding plate*, thick 8vo. 



c/.,8*(p. 16*) ib., 1876 



5204 Problems in Illustration of the Prinoiplea of Flank Coordinats Geombtby, 



diagrams, 8vo. cl., 4* 6d ib., 1851 



5205 Treatise on the Differential Calculus, diagrams, 8vo. cl., 3$ tb., 1845, or '8 



5?06 Another Copy, c/., with auto. [Sir] 'J. Knox 'Laughton, Caiut Coll: \H52' on Jlyleitf, 



Iv 6d ib.. 1846 



5207 Another Copy, with Collection of Problems in Illustration of the Principles of 



Theoretical Hydrostatics and Hydrodynamics, 3 plates— 2 vols. 8vo. in 1, hf calf gUt, 

 6s ib., 1845-7 



5-208 WANSBROUGH (William Dyson) The PORTABLE Engine: iU Construction and Manage- 

 ment, with 2 folding plates {linen-mounted), and 90 woodcuts, poet 8vo. hf. green calf, 2* %d li87 



5209 WARBURTON (Henry, f.r.s.; m.p.) On the Partition of Numbers, and on Combinations 

 and Permutations (pp. 22) : On Self-Kepeating Series (pp. 16)— 2 vols. 4to. \n\,h/. calf, with 

 Sandhurst College bookplate, is 6d Cambridge, 1847-54 



The author's only two mathematical works. Hq was one of the founderf of l/ondon University, and an (wiginal romnber 

 of the Political Economy Club. 



5210 WARD (George, Philomath.) The Gauger's Practice : or the Practical Way how to Gauge 

 and Inch Brewers Tuns ; and the Gauging of Casks, according to the True Rules of Art, with a 

 Table of Cylinders in Ale (gallons and Centessemal [sic] parts, from 8 to GO Inches in Diamiter 

 [aic] , and 31 Inches in Depth, 8vo. sound copy in contemporary sheep, 7« 6d 1698 



Unknown to Lowndea, Allibone, and Watt. 



5211 WARD (John; Ganger General of Excise) Clayis I'SUR.*: ; or a Kev to INTEREST, both 

 Simple and Compound, with Rules to be observ'd in Estimating the Value of Annuities, or 

 Leases, and Insurances for Lives, with folding portrait by v. d. Gucht {fine impression), 12mo. 

 sound copy in old calf {rare), }2s 6d 1710 



l.'nknown to I^wndes and Prof, de Morgan. 



5212 The YouNO Mathematician's Guide : a Plain and Easie Introduction to the Mathe* 



maticks, with Appendix of PRACTICAL GAUGING, 3rd Ed., portrait by van der Gucht, and diagrams, 

 sm. 8vo. old calf, 6s 1719 



5213 Sixth Edition, carefully corrected, and New Tables of Compound Interest at 5 p.c, 



portrait and diagrams, 8vo. old calf, 5« i7S* 



5214 Seventh Edition, with the History of Logarithms, and Index, diagrams, 8vo. old 



calf, 5s 1740 



;'32i5 Eleventh Edition, with Supplement, containing the History of Logarithms, dia- 

 grams, 8vo. old calf, 5s 1762 

 • A useful coursA, which is recommended by Ranhsoa and DIttoo.*— Prr/- rf' MorrmH. 



5216 WARD (Seth, 50th Bp. of Sarum : Savilian Prof.; F.R.8.) IDEA TrI(;osometri.« DEMON- 

 strat.k (in iisuni Juventutis Oxon.) ; item Pradectio de CoMETis, et InrjuiMitio in RULLIALDI 

 ASTRONOML*: PhilolaiC;*: Fundamenta ; toith diagrams, 3 vols. cr. 4to. in 1, old calf {sound 

 copy), with bookplate of Philip 2nd Karl Stanhope, F.Ii.S., 15* Oxonta-, 16543 



In the last treatwe, the author ailvances 'a theory of planetary motion at once simpler and more aecuraU than that of 

 RouUiau. . . . AcconlmK 'm his hyi>othet<is the line drawn from a planet to the superior fociu of its elliptical orbit turns 

 with a uniform an^rular velocity round that \to\i\\.' .- U. X. li. 



5217 WARDLE (Sir Thomas, f.c.s.) Examination into the Divisibility of the Brin or Ultimate 

 Fibre of the Silk of Bombyx Mori, or Silk of Commerce, and of some ^Vild Silks, with a Mono- 

 graph 'sullo SHlacciar^i delle Sete Tinio', trans, by Kate Milnee and the Author, with 

 numerous' illustrations, 8vo. cl., 4s Manchester, \90H 



5218 WARDLE (W.) COMPREHENSIVE Reference Book on Practical Coal Mining, 3rd E<l., 

 ivith portrait, and numerous plates and woodcuts, 8vo. cl., 3* 1889 



5219 Fourth Edition [enlarged], icith portrait, and numerous plates and woodcuts, 8vo. cl., 



5.V 18vl 



5220 WARNER (Thomas) How to keep the Clock right by Observations of the Fixed Stars 

 with a Small Telescope, with Tables of Stars, roy. 8vo. cl. {scarce), 5s 1869 



5221 WARR (George Finden) Dynamics, Construction of Machinery, Equilibrium of 

 Structures, and the Strength of Materials, with 277 woodcuts, 8vo. c/., 2* 6d 1851 



5222 Another Copy, hf. calf gilt, 3s 



