HENPwY SOTHERAN & CO., 140. STRAND, W.C, and 37, PICCADILLY, W. 249 



4878 TODHUNTEB (Isaac, f.r.s.) Elementary Treatise on Laplace's Function^, i.ami s 

 Functions, and Bessel's Functions, post 8vo. c/., uncut (scarce), £1. 10* l>7.") 



4879 Another Copy, hf. calf gilt {a few II. slightly wormed), £1. 5* 



' The work may be regarded both as an account of the Functions to wliich it is specially devoted, and also as a con- 

 tinuation of the two volumes on the Differential and Integral Calculus respectively [qq. v. infra] ; the thr^-e to;jc«ther 

 form a connected treatise on the higher department of pure mathematics.'— /wrro, 



4880 Elementary Treatise on the TnEOBY of Equations, with a Collection of Kxamples, 



post 8vo. cl., 2s Cambridge, ISiil 



4881 Second Edition, revised, post Svo. c/., 2« 6rf 1867 



4882 Third Edition, post 8vo. cl., 3* (p. ^s 6rf) 1875 



4883 The Elements of Euclid, with Notes, Appendix, and Exeieises; new Ed. by S. L. Loney, 



with diagrams: Kev to the Exercises— 2 vols, post Svo. c/., 5* 6// (p. Il*) 1899-88 



4884 History of the Mathematical Theories of Am and the Figure of the 



Earth, from Newton to Laplace, with diagrams, 2 thick vols. > i:Y SCARCE), £3. Zs 1873 



4885 — Another Copy, hf. morocco, £3. 



An invaluable work, the tirst comprehensive history on the auhjeet. 'Although much has been published on the 

 History of Astronomy, yet the progress of the mathematical development on the history of attraction has bMO left almost 

 untouched.'— Pre/tu». 



4886 History of the Mathematical Theory of PBonAiuLirv, from Paacal to Laplace, thick 



8vo. c/., uncut, or, hf. morocco gilt (VERY SCARCE), £2. 2* Cambridge^ 1865 



4887 Another Copy, brown prize calf extra (fine copy), £2. Is 6d 



The only important history of the tlieory of probability extant, and like Dr. Todbunter's Other hlstorioal works, i^t 



great value also from a bibliographical point of view. 



4888 History of the Progress of the Calculus of Variations daring the X I \ i n centurv. 



with folding plate, Svo. cl., uncut, with author's inscr. (VERY SCARCE), £2. 5« tbidem, 1861 



4889 Another Copy, hf. calf, £2. 



4890 Another Copy, new hf. brown calf extra, uncut, t. e. g., £2. Is 6d 



4891 History of the Theory of Elasticity, and of the Strength of Materials, from 



Galilei to the present Time ; edited and completed by Karl Pearson, f.r.8., toith platea and 

 woodcuts, 2 thick vols. 8vo. in 3, d., uncut, £1. 12* 6rf (p. £2. 15«) ibidem, Univ. Press, 1886-03 



4892 Vol. I only : from Galilei to Saint- Venant (1639-1850), with plates and woodcuts, thick 



8vo. cl., 12* 6d (p. £1. 5s) 1885 



4893 Plane Trigonometry, with numerous Examples, 8th Ed., with diagrams, post Svo. 



cl., 2s 6d (p. 5*) 1880, or '4 



4894 Another Copy, with Key, 2 vols, post Svo. cl.,'Js6d (p. 15* 6*0 1884-79 



4895 Researches in the Calculus of Variations, principally on the Theory of Dis- 



CONTINUOUS Solutions (Adams Prize Essay, 1871), Svo. new hf. calf extra, unrut, t. e. g. {a few 

 slight wormholes), £1. 7* 6rf 1871 



' His most original work.'— J". Bass MulUinger. 



' A most important research, developing the theory of discontinuous solutions (discussed in particular pUeat by 

 Legendre), and doing for this subject what Sarrus had done for multiple integrals.'— Prq/1 Cajori. 



4896 Spherical Trigonometry, with numerous Examples, diagrams, poet 8vo. el., 2* 



Cambridge, 1850 



4897 New Edition, enlarged, post Svo. cl., 2* 6rf 1871, or '8 



4898 Treatise on Analytical Statics, with numerous Examples, 2nd Ed., enlar^d, with 



diagrams, post Svo. d., 3* Cambridge, 1858 



4899 Third Edition, enlarged, with diagrams, post Svo. cl., is (p. 10* 6</) 1866 



4900 Treatise on the Differential Calculus, with numerous Examples, 5th [final] 



Edition, with diagrams, post Svo. cl., or, hf. calf, 5* (p. 10* 6rf) 1871 



4901 Sixth Edition [unaltered], unth diagrams, post Svo. cl., 5* (p. 10* 6«0 187.1 



4902 Seventh Edition [unaltered], xcith diagrams, post Svo. el., 6* 8rf (p. 10* 6«0 1875 



4903 New Edition [unaltered], with diagrams: Key by H. St. J. HuxTBR, with diagram*— 



2 vols, post Svo. d., 12* (p. £1. 1*) 1890-88 



4904 Treatise on the Integral Calculus and it« Applications, with nmncroui Examples, 



3rd Ed., enlarged, with diagrams, post Svo. hf. calf, 4* 1868 



4905 Fourth Edition, revised and enlarged, with diagrams, pout Svo. c/., 4s6d{p. \0s6d) 1874 



4906 Final Edition [enlarged], with diagrams, poet Svo. cl., 6* (p. 10* 6rf) 1891 



4907 Another Copy, with Key by H. St. J. Hunter, with diagrams, 2 vols, poet 8vo. c/.. 



12* (p. £1.1*) 1895 89 



4908 Treatise on Plane Co-ordinate Geometry as applied to the Straight Line and the 



Conic Sections, with numerous Examples, 5th Ed., with diajnmu, poet 8vo. c/., 3* «rf 

 (p. 7* 6flO 1«7* 



William Whewell, d.d. : an Account of his Writings— r. Whewelu r»»t 



• Todhunter's sustained industry and methodical distribution of his time enabled him to soqolrs a wide sconi 

 with general and foreign literature ; and besi.les being a s<.uiid Utin snd Greek scholar, be was fsmlltor with 

 German, Spanish, and lUlian, and also with Russian. Hebrew, and Sanskrit. He was well vers«l In the history of 

 philosophy ; his LabiU and tastes were singularly simple ; and be was not without coDSidetmbIc humour. -J. Bau 



MiiUinger. 



4909 TOLHAXJSEN (Alexander und LouU) Teciinologisches Worterducii in franwmischer, 

 deut.«^cher und englischer Sprache, Bd. Ill: dkutsch-ENGLISCHFRANZosISCH, 2. Auflage. large 

 121110. (])]). 960), hf. German morocco gilt, 4* (p. M. S sewn) Leipztq, 1882 



4910 TOMLINSON (Charles, f.r.s.) Cyclopa:dia of Useful Arts, Mechanical and Chemical, 

 Manufactures, Mining, and Engineering, with AOfine steel plates, and 2477 woodcuts, 2 thick vols, 

 impl. Svo. hf. calf antique, 7* 6^ (p. £2. 5*) 1854 



Of historical interest, illustrating every variety of contemporary machinery^ 



17 



