322 HENRY SOTHERAN & CO.^ 140, STRAND, W.C., AND 3?, PICCADILLY, W. 



6304 BOIS-ATME ( du) LETTRE a Mr- Lancret (au Sujet cles ANGLES de premiere et seconde 

 Flexion de Developpees de GOURDES a DOUBLE COURBURE) ; with folding copperplate, 4to. 

 (pp. 13), sewn (rare), 5s [1800] 



6305 BOIS-RETMOND (Paul du) BEITEAGE /ur INTERPRETATION der PARTIELLEN DIFFERENT! A L- 

 GLEICHUNGEN, I. HEFT : Tlieorie der Charakteristiken ; Svo. limp roan, uncut, with auto, and 

 MS. corrections of Prof. H. W. LI. Tanner, F.R.S., 3s Gd 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. SCRATCHLEY, with numerous folding tables and maps, Svo. cl., Gs Gd (p. 14s) 1888 



6307 BOLTON (Reginald Pelham, A.M.I.C.E.) MOTIVE POWERS, and their PRACTICAL SELECTION, 

 post Svo. cl. (out of print), Qs 1895 



63C8 BOLTZMA.NN (Ludwig, Univ. Munich, F.R.S.) VORLESUNGEN iiber MAXWELLS THEORIE 

 der ELEKTRICITAT und des LICHTES, I. Theil : Ableitung der Grundgleichungen fiir ruhende, 

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

 (p. M. 6) Leipzig, 1891 



6309 BOMBELLI (Rafaele, da Bologna] L' ALGEBRA, Opera con la <{uale ciascuno da se potra venire 

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

 sin. 4to. old vellum (VERY RARE), 2. 15* Bologna, Giov. Rossi, 1579 



This important work was the first which laid the foundation of a- knowledge of imaginary' quantities. 'A systematic 

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

 theory of cquitions, and shows that in the irreducible case of a cubic equation the roots arc 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 au approach to index notation. Following in the steps of ytifel \_v.No. 4605, ante'], 

 lie introduced a symbol, ^for the unknown quantity,^,for its square )s 3,for its cube ', etc. etc. etc. IF. W. R. Hall. 



' 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 copy.' Libri Catalogue. 



6310 BOMPASS (Charles Carpenter ; Serjeant at Law] ESSAY on the NATURE of HEAT, LIGHT, and 

 ELECTRICITY, Svo. boards, 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 the 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. Mecli. E., etc. etc., front, and 29 woodcuts, roy. Svo. cl., 4s Gd Hartford, Conn., 1887 



6312 BOND (George Phillips, Harvard Coll. Observatory) OBSERVATIONS on the GREAT NEBULA of 

 ORION, edited by TRUMAN HENRY SAFFORD, with front, of the nebula and Z folding charts, 4to. 

 sewn, 15s (p. 2. 2s) Cambridge [Mass.], 1887 



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 woodcuts, Svo. 

 cl., 3s 1888 



6314 BONI (Pietro Antonio) : INTRODUCTIO in Divinam CHEMLK ARTEM Integra Magistri Boni 

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

 (corner of title with imprint torn off] ; RARE, 1. 1* (7 Argentorati, 1602] 



Including the author's best-known work, Margarita PrecioM, according to Mr. A. E. Waite ' an' exceedingly coin. 

 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 

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

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



6315 BONNET (G. E.) INDUCTION COILS, illustrated, cr. Svo. cl., Is Gd 1892 



6316 BONNET (Thomas George, pr., F.R.S.) The STORY of our PLANET, first edition, with, 

 coloured plates and maps, and 170 woodcuts, roy. Svo. cl., uncut, t. e. g., Qs Gd (p. 1. 11s Gd) 1893 



6317 - CHEAP EDITION [unaltered], with coloured plates and maps, and 170 woodcuts, roy. Svo. 

 cl., uncut, t. e. g., 5s Gd (p. 10s Qd) ' [1896] 



6318 BONNTCASTLE (John, E.M.A., Woolwich; friend of Leigh Hunt] ELEMENTS of GEOMETRY, 

 6th Edition, with diagrams, Svo. boards, 2s ISIS 



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, 

 and 20 copperplates (mostly folding], Svo. old calf, 4s 1786 



6320 THIRD EDITION, corrected and improved, with the. front., and 17 copperplates (mostly 



folding), Svo. old calf, 2* Qd 1796 



(J321 - 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, 3s Qd 1811 



6323 SEVENTH EDITION, greatly improved, with the front., and 20 copperplates (mostly folding), 



thick Svo. boards, uncut, 3s Gd 1816 



6324 EIGHTH [LAST] EDITION, corrected and greatly improved, with, the front., and 20 copper- 

 plates (mostly folding), Svo. hf. calf, 3s Qd 1S22 



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. boards, uncut, 

 5s 1820 



6326 BONTAD03I (Girolamo) DISSERTAZIONE sopra FELASTICITA dell' ARIA, letta nell' Accademia 

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

 Manuscript on 28 pages, sm. folio, sewn, 8v Gd [? Roma], 1781 



