322 HENRY SOTttERAN Sc CO.^ 140, STRAND, W.O., and 3?, PICCADILLY, W. 



6304 BOIS-AYME {— du) Lettre a Mr- Lancret (an Sujet des Angles de premiere et seconde 

 Flexion de Developpees de Courbes a Double Courbure) ; with folding copperplate, 4to. 

 (pp. L3), sewn (rare), 5s ' [1800] 



6305 BOIS-REYMOND (Paul du) Keitrage ziir Interpretation der partiellen Differential- 

 GLEICHUNGEN, I. Heft : Tlieorie der Charakteristiken ; 8vo. limp roan, uncut, with auto, and 

 MS. corrections of Prof. H. W. LI. Tanner, F.R.S.,'6s Qd Leipzig, 1864 



6306 BOLTON (Col. Sir Francis John) London Water Supply, including a History and Descrip- 

 tion of the London Waterworks ; new Ed. with short Exposition of Water Companies' Law, 

 Alphabetical Digest of Leading Decisions of the Courts, the Statutes, and copious Index, by 

 Philip A. Scratciiley, with numerous folding tables and maps, 8vo. cl., Qs Qd (p. 14s) 1888 



6307 BOLTON (Reginald Pelham, a.m.i.c.e.) Motive Powers, and their Practical Selection, 

 post 8vo. cl. {out oj print), Qs 1895 



6308 BOLTZMANN (Ludwig, Univ. Munich, F.R.s.) Vorlesungen liber Maxwells Theorie 

 der Elektricitat und des LiCHTES, I. Theil : Ableitung der Grundgleichungen fiir ruhende, 

 homogene, isotrope Korper; with 2 plates and 26 diagrams, 8vo. hf. German morocco, 4s 

 (p. M. 6) ■ Leipzig, 1891 



6309 BOMBBLLI (Rafaele, da Bologna) L' Algebra, Opera con la quale ciascuno da se potra venire 

 in perfetta Cognitione della Teorica dell' Arimetica, con Tavola copiosa ; with diagrams, thick 

 sm. 4to. old vellum (very rare), £2. 15* Bologna, Giov. Eossi, 1579 



This important work was the first which laid the f(nm(lation of a knowledge of imaginary' quantities. 'A systematic 

 exposition of the knowledge then current on the subject. He discusses radicals, real and imaginary. He also treats the 

 theory of equitions, and shows that in the irreducible case of a cubic equation the roots are all real ; and he remarks that 

 the problem to trisect a given angle is the same as that of the solution of a cubic equation . . . His work is noticeable for 

 his use of symbols which indicate an approach to index notation. Following in the steps of Stifel [v. No. 4605, aniej, 

 he introduced a symbol, ^for the unknown quantity,^for its square,^for its cube ', etc. etc. etc. — IF". W. R. Ball. 



' This celebrated work is of extraordinary rarity, and although Prof, de Morgan inserts Bombelli's name in his index, on 

 the authority of Peacock, he seems to have been unable to find a co]iy.'— /J6n Catalogue. 



6310 BOMPASS (Charles Carpenter ; Serjeant at Law) Essay on the Nature of Heat, Light, and 

 Electricity, 8vo. hoards, 5s 1817 



By the father of William Carpenter Bompas, Bp. of Athabasca, called the Apostle of the North, who spelt his name 

 with one S. 



6311 BOND (George M.) Standards of Length and their Practical Application : the Methods 

 employed for tlie Production of Standard Gauges, to insure Uniformity and Interchangeability 

 of Manufactures, with the Reports of Prof. W. A. Rogers ; the Committee on Standards and 

 Gauges, A. S. Mech. E., etc. etc., front, and 29 woodcuts, roy. 8vo. cl., ^s (ii Hartford, Conn., 1887 



6312 BOND (George Phillips, Harvard Coll. Observatory) Observations on the Great Nebula of 

 Orion, edited by Truman Henry Safford, ivith front, of the nebula and 2 folding charts, 4to. 

 sewn, 15s (p. £2. 2s) Cambridge [Mass.'], 1867 



6313 [BOND (Col. Henry, r.a.)] Treatise on Military Small Arms and Ammunition, with 

 Theory of the Motion of a Rifle Bullet, numerous plates {some coloured), and ivoodcuts, 8vo. 

 cl, 35 1888 



6314 BONI (Pietro Antonio) : Introductio in Divinam ChemI/E Artem Integra Ma^istri Boni 

 Lombardi Ferrariensis Physici, nunc primiim Integra in Lucem edita; sm. 4to. old limp vellum 

 {corner of title with imprint torn off) ; RARE, £1. \s [^ Argentorati, 1602] 



Including the author's best-known work, Margarita Preciom, according to SFr. A. E. Waite 'an exceedingly com- 

 prehensive, conscientious treatise on the history, theory, and practice of alchemy, written after the manner of the 

 scholastics, and naturally containing much irrelevant matter, but for all this very useful and even interesting. The 

 difticulties of the art are manfully faced, the sophistications, deceptions, and contradictions of its professors are reproved, 

 and tlio author attempts to show that alchemy is in reality a short art and a slight practice, though full of truth and nobility.' 



6315 BONNEY (G. E.) Induction Coils, illustrated, cr. 8vo. cl.. Is 6d 1892 



6316 BONNEY (Thomas George, pr., f.r.s.) Tlie Story of our Planet, first edition, tcith 

 coloured ])lates and maps, and 170 woodcuts-, roy. Svo. cl., uncut, t. c. g., 6* ^d (p. £1. \\s Qd) 1893 



6317 Cheap Edition [unaltered], with coloured jjlates and maps, and 170 woodcuts, roy. 8vo. 



cl., uncut, t. e. g., 5s (kl (p. 10** 6d) [1896] 



6318 BONNYCASTLE (John, R.M.A., Woolwich ; friend of Leigh Hunt) Elements of CJeometry, 

 0th Edition, with diagrams, Svo. boards, 2s 1818 



6319 Introduction to Astronomy, in which the most useful and interesting Parts of the 



Science are clearly and familiarly explained, first edition, with front, by Sherwin after Fuseli, 

 a7id 20 copperplates {mostly folding), Svo. old calf, 4* 1786 



6320 Third Edition, corrected and improved, with the front., and 17 copperplates {mostly 



folding), Svo. old calf, 2s ed 1796 



6321 Fifth Edition, corrected and improved, with 19 copperplates {mostly folding), Svo. old calf 



{cracked), 2s 1807 



6322 Sixth Edition, corrected and improved, with the front., and 19 copperplates {mostly 



folding), Svo. old calf gilt, 3* Qd 18U 



6323 Seventh Edition, greatly improved, with the front., and 20 copperplates {mostly folding), 



thick Svo. hoards, uncut, 3^ iSd 1816 



6324 Eighth [last] Edition, corrected and greatly improved, with the front., and 20 copper- 

 plates {mostly folding), Svo. hf. calf, 3s Qd 1822 



6325 Treatise on Algebra, in Practice and Theory, with Particulars of the Discoveries and 



Improvements made, 2nd [last] Ed., greatly improved, with diagrams, 2 vols. Svo. hoards, uncut, 

 5s 1820 



6326 BONTADOSI (Girolamo) Dissertazione sopra I'Elasticita dell' Aria, letta nell' Accademia 

 di Fisica Sperimentale di S. E. il. Sig: Cardinale do Zelada : a very neatly written unpublished- 

 Manuscript on 28 pagci, sm. folio, .'icini, Ss^ M [■ Roma:], 1781 



