HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 121 

 2404 LAMBERT (Johann Heinrich) PHOTOMETRIA, sive de MENSURA et GRADIBUS LUMINIS, 

 COLORUM et UMBRAE, editio princeps; with & plates, sin. 8vo. old hf. calf(R&RE), 1. 5s 



Aug. VindeL, 1760 



First Edition of this work, which first laid a scientific basis for the measurement of the intensity of light. 



2105 - Les PROPRIETES REMARQUABLES de la ROUTE de la LUMIERE, par les AIRS, et par 



plusieurs Milieux refringens spheriques et concentriques, avec la Solution des Problemes, 



premiere edition ; with 2 plates, 8vo. sewn (rare), 10* 6d La Haye, 1758 



The author's first published work, containing important researches on the refraction of light. It greatly influenced 



Arago in his researches on polarisation. 



2406 - PYROMETRIE, oder vom MAASSE des FEUERS und der WARME, 1. Ausgabe ; with % fold- 

 ing plates, 4to. old hf. calf (RARE), 1. Is Berlin, 1779 



1 Lambert's most important work, Pyrometne (Berlin, 17.79), is a systematic treatise on heat, containing the records and 

 full discussions of many of his own experiments.' Ency. Brit. 



2407 [ ] SYSTEME du MONDE, premiere edition, 12mo. old hf. calf (fine copy), with bookplate of 

 Charles 3rd Earl Stanhope, F.K.S., 5s Bouillon, 1770 



An abridged translation of the ' Cosmologische Briefe ' by J. B. MERIAN. 



2408 - The SYSTEM of the WORLD, trans, [with 'Encomium'], by JAMES JACQUE, 12mo. 

 boards, uncut, 4s 1800 



2409 - ZUSATZE zu den LoGARiTHMiscHEN und TRIGONOMETRISCHEN TABELLEN zur Erleichte- 

 rung und Abkiirzung der bey Anwendung der Mathematik vorfallenden Berechnungen, large 

 12mo. old vellum, 5s Berlin, 1770 



The above copy belonged to THOMAS CLAUSEN, the astronomer, and has his auto. 'Thomas Clausen. Altona 1825' on 

 title, and a MS. index at end in the same handwriting. 



2410 LAM (Gabriel) COURS de PHYSIQUE, 2 e Edition ; with plates, 3 vols. 8vo. hf. calf, with auto, 

 of Prof. A. W. Williamson, F.R.S., Qs 1840 



2411 - - EXAMEN des DIFFERENTES METHODES employees pour RESOUDRE les PROBLEMES de 

 GEOMETRIE, edition originale ; with 2 folding plates, 8vo. sewn, uncut, 16s 1818 



The author's first published work, the above original edition of which is now EXCESSIVELY RARE. 



2412 - - LsgoNS sur les COORDONNEES CURVILIGNES et leurs diverses Applications, 8vo. hf. roan 

 gilt (scarce), 12? 1859 



2413 _ LEC.ONS sur les FONCTIONS INVERSES des TRANSCENDANTES et les SURFACES ISOTHERMES, 

 8vo. hf. calf (binding rubbed), 3s 1857 



2414 - - ANOTHER COPY, hf. roan gilt, 3s 6d 



This work first introduced the functions known by the author's name. 



2415 - - LECONS sur la THEORIE ANALYTIQUE de la CHALEUR ; with diagrams, 8vo. hf. roan 

 gilt, 4* 1861 



2416 - - LEC.ONS sur la THEORIE MATHEMATIQUE de I'ELASTICITE des CORPS SOLIDES ; with 

 plate, 8vo. hf. calf gilt (scarce), 12.? 1852 



'A problem in elasticity called by Lame's name, viz. to investigate the conditions for equilibrium of a spherical elastic 

 envelope subject to a given distribution of load on the bounding spherical surfaces, and the determination of the resulting 

 shifts is the only completely general problem on elasticity which can be said to be completely solved.' Pro/. Cajori. 



2417 LA M^THEBIE (Jean Claude de, Docteur en Medecine) ESSAI ANALYTIQUE sur 1'AiR PUR, 

 et les diffe"rentes EsPECES d'AiR, premiere edition, Svo.fine copy in contemporary French caff 

 extra (rare), 10s 6d 1785 



Iii this work the author was the first to maintain what was then considered a paradox, and even ridiculed by Lavoisier 

 that oxygen does not form a necessary constituent of acids. 



2418 LAMONT (Johann v. ; F.R.S.) HANDBUCH des MAGNETISMUS ; with 281 woodcuts, roy. 8vo. calf, 

 3s 6d Leipzig, 1867 



The author, who was born in Scotland, discovered the decennial magnetic period, and the ' earth-current '. 



2419 LAMY (Bernard, Prestre deVOratoire) OUVRAGES de MATHEMATIQUE ; with numerous plates, 

 ivoodcuts, and diagrams, 3 vols. 12mo. old calf gilt (nice copy), with bookplate of Philip 2nd Earl 

 Stanhope, F.E.S., 7s 6d Amsterdam, 1734 



2420 - - TRAITE de PERSPECTIVE, oh sont contenus les Fondemens de la Peinture ; plates and 

 woodcuts, 12rao. old calf gilt, with Lord Stanhope's bookplate, 4s 1701 



2421 LAN A (Francesco [Terzi de] , s.j.) PRODROMO overo Saggip di alcune INVENTIONI NUOVE 

 premessp all' Arte Maestra, per mostrare li piu reconditi Principij della Naturale Filosofia, 

 riconosciuti con accurata Teprica nelle piu segnalate Invention!, ed Isperienze sin' hora ritrovate da 

 gli Scrittori di questa Materia, etc. ; with 20 plates, io\io,fine and large copy in old Italian vellum 

 (back of binding damaged) ; VERY RARE, 1. 14s Brescia, 1670 



This work is important in the history of ballooning as being the first to formulate a theory of aerostatics. The author 

 proposed besides many other curious experiments-to exhaust hollow globes of copper, which, being lighter than the air, 

 were to raise the vehicle placed underneath. Plate II illustrates this fanciful idea. 



2422 LANDEN (John, F.R.S.) ANIMADVERSIONS on DR. STEWART'S COMPUTATION of the SUN'S 

 DISTANCE from the EARTH, folding plate, 4to. (pp. 14), sewn, 4s printed for the Author, 1771 



The above copy has the author's life (from the Universal Magazine', 1791) added in an old hand. 



DISCOURSE concerning RESIDUAL ANALYSIS : a New Branch of the Algebraic Art, of 

 very extensive Use, both in Pure Mathematics and Natural Philosophy, '58 : The RESIDUAL 

 ANALYSIS ; a New Branch of the Algebraic Art, Book I [all published] , 5 folding plates, '64 : 

 MATHEMATICAL LUCUBRATIONS : containing New Improvements in various Brandies of the 

 Mathematics, 5 plates, '553 vols. 4to. in 1, contemporary hf. calf ailt, with bookplate of Charles 

 3rd Earl Stanhope, F.R.S. (RARE), 1. 10* 1755-64 



The first two works are important as the first attempt to substitute a purely algebraical method for the fluxional calculus, 

 a subject father developed by Lagrange in his Theorie des fonctions analytigues. 



2424 MATHEMATICAL LUCUBRATIONS : containing New Improvements in various Branches of 



the Mathematics, with folding plates, 4to. old calf, binding broken (rare), 9s 6d 1755 



' His writings served as the starting-point of investigations by Euler," Lagrange, and Legendre '. Prof. Cajori. 



