HENRY SOTHERAN & CO., 140, STRAND, W.C, and 37, PICCADILLY, ^V. 121 



2404 LAMBEBT (Johann Heinrich) Photometria, sive de Mensura et Gradibus Luminis, 

 COLORUM et Umbr.e, editio princeps; \vith 8 plates, sin. 8vo. old hf. ca// (rare), £1. 5* 



Avg. Vindel., 1760 

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



2105 Les PR0PRr6Tt.s Remarquables de la Route de la LuMifeRE, par les Airs, et par 



plusieurs Milieux refringens apheriques et concentriques, avec la Solution des Probl6mes, 

 premiere edition ; lotth 2 plates, 8vo. sewn (rare), 10s 6a 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. 



2^06 PVROMETRIE, oder voni Maasse des Feuers und der Warme, 1. Ausgabe; with 8 fold- 

 ing plates, 4to. old hf. crt//(RARE), £1. 1* Berlin, 1779 

 ' Lamberfs niost important work, Pyrometrie (Berlin, 1779), is a systematic treatise on heat, containing the records and 

 full discussions of many of his own experiments.'— ^»iq/. Brit. 



2407 [ ] SvsTteME du Monde, premiere Edition, 12nio. old hf. calf (fine copy)^ with bookplate of 



Charles 'Srd Earl Stanhope, F.B.S., 5s Bouillon, 1770 



An abriageil translation of the ' Cosmologische Briefe ' by J, B. Mkrian. 



2408 The System of the World, trans, [with ' Encomium '] , by James Jacque, 12mo. 



boards, uncut, is 1800 



2409 ZusATZE zu den LOGARITHMISCIIEN 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 Clausek, the astronomer, and has his auto. 'Thomas Clausen. Altona 1825' on 



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



2410 LAMi: (Gabriel) CouRS de Physique, 2® Edition ; with plates, 3 vols. 8vo. hf. calf, with auto, 

 of Prof A. W. Willianuon, F.R.S., 6s 1840 



2411 ExAMEN des Diff^rentes M^thodes employees pour r^soudre les PROBLfeMES de 



G6om6trie, Edition origrinale ; 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 LEgoNS sur les Coordonn6es Curvilignes et leurs diverses Applications, 8vo. hf. roan 



gilt (scarce), 12s 1859 



2413 LEQONssurles FoNCTiONS INVERSES des Transcendantes et les Surfaces Isothermes, 



8vo. hf. calf (binding rubbed), Zs 1857 



2414 Another Copy, hf roan gilt, 3s 6c? 



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



2415 Lecons sur la Th6orie Analytique de la Chaleur ; with diagrams, 8vo. hf. roan 



gilt, is ' , 1861 



2416 Lemons sur la Th^orie Math6matique de I'Elasticit^ des Corps Solides ; with 



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



* A problem in elasticity called by Lamp's name, viz. to investigate the conditions for equilibrium of a spherical ela.stic 

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

 aliifts is the only comiiletely general problem on elasticity which can be said to be completely solved.'— iVo/. Cajori. 



2417 LA M^THEBIE (Jean Claude de, Docteur en Medecine) EssAi Analytique sur I'Air Pur, 

 et les ditlerentes EsPECES d'AiR, premiere edition, 8\o. fine copy in contemporary French calf 

 extra (rare), 10s 6d 1785 



In this work the author wa.s the first to maintain— what was then considered a paradox, and even ridiculed by Lavoisier 

 — that oxygHu doe.s jiot form a necessary constituent of acids. 



2418 LAMONT (Johann v. ; f.r.s.) Handbuch des Magnetismus ; with 281 ivoodcuts, roy. 8vo. calf, 

 :iv 6d Leipzig, 1867 



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



2419 LAMY (Bernard, Prestre deVOratoire) OuVRAGESde Math6matique ; with numerous plates, 

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

 Stanhope, F.R.S. , 7* 6rf Amsterdam, 1734 



2420 Traite de PERSPECTIVE, ou sont contenus les Fondemens de la Peinture ; plates and 



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



2421 LANA (Francesco [Terzi de] , s.J.) Prodromo overo Saggio di alcune Inventioni Nuove 

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

 ricono.«K;iuti con accurata Teorica nelle piu segnalate Inventioni, ed Isperienze sin' hora ritrovate da 

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

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



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



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



were to ralne the vehicle place<i underneath. Plato II illustrates this fanciful idea. 



2422 LANDEN (John, f.r.s.) Animadversions on Dr. Stewart's Computation of the Sun's 

 Ulstance from the E\RTH, folditig plate, 4to. (pp. 14), sewn, is printed for the Author, 1771 



Ti\« above copy has the author's life (from the ' iJniversal Magazine', 1791) added in an old hand. 



2423 Discourse concerning Residual Analysis : a New Branch of the Alf'ebraic 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 Lucitbrations .- containing New Improvements in various Brandies of tlie 

 Mathematics, 5 plates, '55—3 vols. 4to. in 1, contemporary hf calf gilt, with bookplate of Charles 

 lird Earl Stanhope, F.R.S. (RARE), £1. 10s 1755-64 



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

 a subject further developed by Lagrange in his Theorie rfw fonctions aiialytiques. 



2424 Mathematical Lucubrations : containing New Improvements in various Branches of 



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



' His writings served as the starting-point of investigations by Euler, Lagrange, and Legendre '.—Pro/. Cajori. 



9 



