in quo 

 Numeris 



24 HENRY SOTHERAN & CO , 140, STRAND, W.C., AND 37, PICCADILLY, W. 



455 BOIS-BEYMOND (Emil du) UNTERSUCHUNGEN iiber THIERISCHE ELEKTRICITAT ; with 12 

 folding plates on copper, 2 vols. large 8vo. in 3, hf. calf gilt, 1. \s (p. M. 34 sewn.) Berlin, 1848-84 



A nice copy of this epoch-making work, containing tlie result of his investigations into animal electricity, and lirst 

 making known the nature and magnitude of the electric forces in the nerves and muscles. 



456 - : On ANIMAL ELECTRICITY : an Abstract of his Discoveries, ed. by H. BENCE JONES, 

 F.R.S., with 50 woodcuts, 12mo. cl. (out of print), 5s 1852 



An abstract of the first 2 vols. of the above work. 



457 BOLAS (Thomas) GLASS BLOWING and WORKING, illustrated, post Svo. cl., Is Qd [1898] 



458 , and George E. BROWN: The LENS: its Choice, Use, and Testing, illustrated, 



Svo.cl.,lsQd 1902 



459 , Alex. A. K. TALLENT, and Edgar SENIOR: HANDBOOK of PHOTOGRAPHY in 



COLOURS, 3 coloured plates, with numerous woodcuts, cr. Svo. cl., 3s (p. 5s nett) 1900 



460 BOMBELLI (Rafaello) L' ALGEBRA: PARTE MAGGIORE del' ARIMETICA [sic'], nuovaniente 

 posta in Luce ; with diagrams, thick cr. 4to. old vellum, (VERY RARE>, 3. ?>s Bologna, 1572 



FIRST EDITION of this important work, the first which laid the foundation of a knowledge of imaginary quantities. 

 'A systematic exposition of the knowledge then current on the subject. lie discusses radicals, real and imaginary. He 

 also treats the theory of equations, and shows that in the irreducible cases 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 lo index notation. Following in the steps of 

 8tifel, he introduced a symbol, J^for the unknown quantity,^for its square, ^for its cube ', etc. etc. etc. W. W. R. Jlnll. 



401 BONGO \latine BCJNGUSJ (Pietro) NUMERORUM MYSTEBIA, ex abditis plurirnarnm dis- 

 ciplinarum fontibus hansta : Opus Maximarum Kerum. Doctrina, et Copia refertum : i 

 minis in primis, idemque perpetuus Arithmetics Pythagoricae cum Divina3 Pa<;ina3 N 

 consensus, multiplici ratione probatur, II. editio, recognita, et tertia ainplius parte locupletata, 

 4to. old vellum (some II. water-stained, otherwise a sound and large copy], 1. Is Bergomi, 1591 

 The second edition of this curious mystical work was the last revised by the author, and is VERY RARE. 'He 

 worked with great industry and satisfaction on 06<i, which is the Number of the Beast in Revelation (xiii. 18), the symbol 

 of Antichrist. He reduced the name of the 'impious' Martin Luther to a form which may express the formidable, 

 number. Placing a = 1, b = 2, etc., k=10, 1 = 20, etc., he finds after misspelling the name that Martin Lutcra 

 constitutes the number required.' Prof. Cajori. 



462 BONNET (Ossian) LECONS DE MECANIQUE ELEMENTAIRE, I e Partie (seule parue) ; with 135 

 diagrams, Svo. sewn, 3s 1858 



Containing important contributions on variable curvature. 



463 BONNEY (Thomas George, pr., F.R.S.) The STORY of our PLANET, coloured plates and maps, 

 and numerous woodcuts, roy. Svo. cl. , 5s Qd (p. 10s Qd) [1896] 



464 BONSDORFF (Pehr Adolph v.) TENTAMEN MINER ALOGICO-CHEMICUM de PARGASITE, 

 4to. (pp. 20), sewn (name cut off title), 3s Qd Abocc [1816] 



465 BOOLE (George; F.R.S.) INVESTIGATION of the LAWS of THOUGHT, on which are founded the 

 Mathematical Theories of Logic and Probabilities, Svo. cl., uncut (VERY SCARCE) 1. 15* 1854 



' It is to his ' Laws of Thought' that his most durable fame will attach. It is a work of astonishing originality and 

 power, and one which has only recently come to be properly appreciated '. D. N. n. 



466 TREATISE on DIFFERENTIAL EQUATIONS, first edition, plate ; with the Supplementary 



Volume [ed., with Preface, by ISAAC TODHUNTER, F.R.S.], 2 vols. post Svo., hf. calf (backs not 

 uniform] ; VERY SCARCE, 1. 2s Qd Cambridge, 1859-65 



467 ANOTHER COPY, original cl., uncut, 1. 5s 



The Supplementary Volume, which has now become very scarce, has never been incorporated with the following 

 editions of the 'Treatise,' and contains all Prof. Boole wrote with a view to enlarge the original work in a later edition. 



' A standard text-book on Differential Equations, including original matter on integrating factors, singular solutions, 

 and especially on symbolical actions.' Prof. Cajori. 



468 TREATISE on the CALCULUS of FINITE DIFFERENCES, first edition, post Svo. hf. calf 



(SCARCE), 15s ibidem, 1860 



469 - - ANOTHER COPY, cl., uncut, 1. Is 



The above copy belonged to PROF. ARTHUR CAYLEY, F.R.S., and has added two original equations in his handwriting 

 on pp. 24 and 27. It also bears the inscr. ' P'rom the Author'. 



470 SECOND EDITION, by SIR JOHN FLETCHER MOULTON, L.J., post Svo. cl. (SCARCE), 1. Is 1872 



' His treatise on Finite Differences (1860) and his Laws of Thought (1S.">4) arc works of high merit.' Prof. Cajori. 



471 BOOTH (James, pr., F.R.S.) The THEORY of ELLIPTIC INTEGRALS, and the Properties of Surfaces 

 of the Second Order, applied to the Investigation of the Motion of a Body round a Fixed Point, 

 diagrams, Svo. boards (scarce), 10s Qd 1851 



This work first contains the author's invention of tangential co-ordinates, generally known as the 'Boothian Co- 

 ordinates.' 



472 BORELLI (Giovanni Alfonso) HISTORIA et METEOROLOGIA Incendii Aetnrei anni 1669, 

 accessit RESPONSIO ad CENSURAS HONORATII FABRI contra librum de Vi PERCUSSIONIS ; with 

 folding view on copper, and woodcuts, 4to. old calf, 8s Qd Regio Julio, 1670 



473 - De MOTU ANIMALIUM, Ed. novissima ; addita: sunt Meditationes mathematics de MOTU 

 MUSCULORUM ; with front, and 19 copperplates, 2 vols. cr. 4to. in 1, old calf (sound copj/), 12s 



Lugd. Bat., 1710 

 BKST EDITION of the author's most important work, applying the laws of mechanics to animal motion. 



474 De Vi PERCUSSIONIS ; editio princeps ; with 5 plates, sm. 4to. FINE LARGE COPY in old 



mottled calf gilt, with bookplate of Philip 2nd Earl Stanhope (rare), 12.? Qd JSanonifi', 16(57 



The first work on the laws of percussion, which undoubtedly influenced JOHN WAI. i, is, who in KJiiS published his 

 discovery of the laws governing the percussion of non-elastic bodies, and CHRISTIA.AN HUYGENS, who deals on the 

 percussion of elastic bodies in his treatise 'de motu corporum ex percussione ', published in It '>(''!. 



475 BOBGNIS (J. A.) THEORIE de la MECANIQUE USUELLE ; contenant la theorie des moteurs, des 

 effets utiles des machines, desorganes mecaniques intermcdiaires, etc., etc. ; with 5 folding plates, 

 4to. hf. calf, 4* 1821 

 BOB.GO (Luca di) v. PACIOLI, post. 



