HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 517 



10368 LA COUR (J. L.) THEORIE der WECHSELSTROME und TRANSFORM A/TOKEN ; with 263 

 diagrams, roy. 8vo. cL, 5s (p. M. 12) Berlin, 1902 



10369 LACROIX ( de, Commissary General of the Marine) ABSTRACT on the MECHANISM of the 

 MOTIONS of FLOATING BODIES, translated by ADML. [SIR CHARLES] KNOWLES, with folding 

 plate, 4to. (pp. 53), sewn (scarce), 10s 60? 1775 



10370 ANOTHER COPY, hf. calf, 12s 



1 Containing more knowledge in the art of ship-building than any other book hitherto published that I have met with. 

 The principles the author proceeds upon are just and true ; I have tried them by a number of experiments, and they agree 

 exactly with the calculations he gives : but what proved most satisfactory to me was thair answering perfectly well when 

 put into practice, in several line of battle ships and frigates, that I built when I was in Russia. .CHARLES KNOWLES.' 

 Preface. 



10371 LACROIX (Sylvestre Frai^ois; de VInstitut} (EuvRES (voir en bas) ; with 26 folding 

 plates, 7 vols. 8vo. old calf, 8s 1802-6 



CONTKNU : Essais de Geometrie sur les Plans et les Surfaces courbes : Traite elementaire d'Ari thine tique : Traite 

 elementaire de Trigonometric rectiligne et spherique : filemens de Geometric : Complement des Elemens d'Algebre : 

 Essais sur I'Enseignemeut des Mathematiques : Traite elementaire de Calcul Differentiel et de Calcul Integral. 



10372 ELEMENS d'ALGEBRE, 19 Edition, 8vo. hf. calf, 2s 1849 



10373 ESSAIS sur 1'ENSEiGNEMENT en general, et sur celui des MATHEMATIQUES en particulier ; 



2 e Edition : TRAITE ELEMENTAIRE de CALCUL DIFFERENTIEL et de CALCUL INTEGRAL, 3 e 



]d., augmentee; with 5 folding plates 2 vols. 8vo. in 1, hf. calf (binding damaged), 3s Qd 1816-20 

 10374 EssAis,de GEOMETRIE, sur les Planu, et les Surfaces Courbes (Elements de Geometric 



Descriptive), 6 e Ed,., revue et corrigee ; with 10 folding plates, post 8vo. hf. calf gilt, 2s Qd 1829 

 10375 TRAITE ELEMENTAIRE de CALCUL DIFFERENTIEL et INTEGRAL, 3 e Edition, augmented ; 



post 8vo. hf. calf, 2s 1820 



10376 HUITIEME EDITION, revue et augmentee de Notes par C. HERMITE et J. A. SERRET ; 



with 5 folding plates, 2 vols. 8vo. cl, 6s (p. F. 15 unbound) 1874 



The final edition. 



10377 ELEMENTARY TREATISE on the DIFFERENTIAL and INTEGRAL CALCULUS, translated, 



with Appendix and Notes [pp. 250, by CHARLES B ABB AGE, SIR JOHN FREDERICK \VILLIAM 

 HERSCHEL, and GEORGE PEACOCK, Dean of Ely, FF.R.S.], with 5 plates, thick 8vo. hf. calf (scarce), 

 8s Qd Cambridge, 1816 



10378 ANOTHER COPY, sewn, 6s 6d 



' This translation gave the first impulse to a mathematical revival in England, by the introduction of the refined 

 analytical methods and the more perfect notation in use on the continent.' D. N. B. The appendix on finite differences 

 by Sir John Herschel was styled by Prof. Tait ' one of the most charming mathematical works ever written.' 



10379 TRAITE ELEMENTAIRE du CALCUL des PROBABILITES, 2 e Ed., augmented ; with plate, 



8vo.calf,2s6d , 1822 



10380 TRAITE du CALCUL DIFFERENTIEL et du CALCUL INTEGRAL, 2 e [DERNIERE] EDITION, revue 



et augmentee ; with folding plates, 3 vols. 4to. sprinkled calf gilt (NICE COPY) : rare, 1. 5s 1810-19 



10381 ANOTHER COPY, hf. calf (sound copy] ; or, newhf. buckram., 1. Is 



The first exhaustive treatise on the subject ever written, and stil'l of value. The preface (pp. 48) consists of an 

 interesting account of its invention (unduly prejudiced in Leibniz's favour), and of its development. 



'Lacroix [1765-1843] etait un des derniers liens qui rattachaient 1'ancienne Academic des Sciences a la nouvelle, et on 

 le venerait comme un debris vivant du dix-huitieme siecle.' Biogr. Gen. 



Born in grjat poverty, he was driven to science by the chance reading of Robinson Crusoe, which set him studying an 

 old treatise on navigation to enable him to discover his own island, and this carried him on to the serious study of 

 geometry at the College de France. 



10382 [LA.CY (John)] The UNIVERSAL SYSTEM, or MECHANICAL CAUSE of all the APPEARANCES 

 and MOVEMENTS of the VISIBLE HEAVENS : shewing the True Powers which move the Earth and 

 Planets in their Central and Annual Rotations, with a DISSERTATION on COMETS . . . likewise an 

 Attempt to prove what it is that moves the Sun round its Axis, with 5 plates, 8vo. boards, uncut 

 (rare], 15s 1779 



' The mechanical cause of the movement of all the bodies within the solar system is occasioned by the sun's moving 

 swiftly round his axis, and thereby projecting the rays of heavy liquid light on them in transverse lines, driving them 

 round his body as the sole centre, and under the Almighty Being, the cause of all our visible system.' Preface. 



This paradox is not Budgeted by Professor de Morgan. 



10383 LADENBTJRG (Albert; Univ. Breslau) HANDWORTERBUCH der CHEMIE, herausgegeben 

 unter Mitwirkung von LUDWIG BEREND, RUDOLF BIEDERMANN, EDMUND DRECHSEL, u. A. m. ; 

 mit General-Register; with 429 woodcuts, 13 vols. roy. 8vo. hf. German calf (binding of a few 

 vv. damaged, and of others rubbed), 3. 3s (p. M. 250) Breslau, 1882-96 



Still valued as a general work of reference on chemistry. 



10384 Ueber die HYDRIRUNGSMETHODE durch NATRIUM und ALKOHOL, 8vo. (pp. 2), 



unbound, Is Berlin, 1901 



103S5 tiber das IsocONUN, ein neues Isomeres des Coniins, und iiber den asymmetrischen 



Stickstoft', roy. 8vo. (pp. 11), sewn, Is 6d ibidem, 1892 



10386 Eine NEUE METHODE zur MOLEKULARGEWICHTSBESTIMMUNG des OZONS, roy. 8vo. 



(pp. 5), sewn, Is ib., 1901 



10387 , und C. KRUGEL: Uber das KRYPTON; with 2 illustrations, roy. 8vo. (pp. 6), 



sewn, Is ib., 1900 



10388 LAER (Henri van) Sur quelques PHENOMENES de COAGULATION produits par les BORATES 

 (Agglutination de la Levure), roy. 8vo. (pp. 17), sewn, Is 6d Bruxelles, 1905 



10389 LA GOTTRNERIE (Jules de) TRAITE de GEOMETRIE DESCRIPTIVE, 3 vols. : Atlas ; with 

 150 plates, 3 vols. 6 vols. 4to. in 2, hf. brown morocco gilt, cl. sides, g. e., with bookplate of Prof. 

 Lloyd Tanner, F.E.S., 12s 6d (p. F. 30 sewn) 1860-4 



A well-known classic on the subject. 



35 



