124 HENKY SOTHERAN & CO., 140, STRAND, W.C, AND 37, PICCADILLY, W. 



2469 LA RUE (Warren de, f.r.s.), Balfour STEWART, f.r.s., and Benjamin LOEWY : 

 Researches on Solar Physics, II. Series: Area-Measurements of the Sun-Spots, observed 

 by Carrington [q. V. ante], 1854 60, and Deductions therefrom, with Appendix on their Distribu- 

 tion in Heliographic Latitude, 4 plates, 2 parts roy. 4to. (pp. 42), sewn, 4* privately printed, 1866-8 



2470 LA RIVE (Augusta Arthur de) Traite d'ELECTRlCIT^ TH^ORIQUE et APPLIQUEE; vnth over 

 440 woodcuts, 3 vols. 8vo. hf. calf, I2s 6d 1854-8 



2471 Another Copy, hf. brotvn morocco [nice copy), \Qs 



2472 Another Copy, hf. purple morocco extra {fine copy), \Ss Qd 



2473 Treatise on Electricity in Theory and Practice, trans, by Charles V. Walker, 



f.r.s., numerous woodcuts, 3 thick vols. 8vo. cl. [scarce) ; £1. 5* 1853-8 



2474 Another Copy, hf. purple morocco extra {fine copy), £1. 12* Qd 



This still valuable work contains in a collected form all the author's important discoveries and investigations. De 

 la Rive was one of the founders of the electro-chemical theory of galvanism, which, slightly modified, was accepted by 

 Faraday ; he was also the inventor of the first gold-plating process, for which he recciveii a prize of 3000 francs fiom the 

 Paris Academy. 



2475 : Notice Biographique, par J. Louis Seret, with photo-portrait, roy. 8vo. sewn, uncut, 



As Geneve, 1877 



2476 LARKIN (N. J.) Introduction to Solid Geometry, and to theSTUDYof Crystallography, 

 containing an Investigation of some of the Properties belonging to the Platonic Bodies inde- 

 pendent of the Sphere, with A folding plates by Lowry, 8vo. cl., or, hf. calf, 3* 6e^ 1820 



2478 LASSAR-COHN (Dr., Kbnigsherg) : Arbeitsmethoden fiir organisch-chemische Labor a- 

 TORIEN, 3. vollstandig umgearbeitete Auflage ; with 131 illustrations^ complete in 5 parts roy. 

 8vo. sewn, £1. 5s (p. M. 40.) Hamburg, 1901-3 



2479 Laboratory Manual of Organic Chemistry, trans, from the 2nd German Ed., by 



Alexander Smith, with 42 illustrations, cr. 8vo. cl., 4s (p. Ss6d) 1895 



2480 LATHAM (Baldwin, c.E.) Sanitary Engineering: a Guide to the Construction of Works 

 of Sewerage and House Drainage, with Tables for facilitating the Calculations of the Engineer, 

 21 plates, and numerous woodcuts, 8vo. hf. calf {title stamped) ; scarce, 15s (p. £1. 10*) 1873 



A standard work on the subject ; now out of print and scarce. 



2481 LATHAM (H., Trinity Hall, Cantab.) Geometrical Problems in the Properties of the 

 Conic Sections, diagrams, 8vo. sewn, Is 6d Cambridge, 1848 



2482 LATITUDE, Series of Pamphlets on the Determination of (in various Languages), between 

 1830 and 1890, with plates, 11 pieces 4to. (one 8vo.) in 1 vol. 4to. hf. calf neat, 12s Qd v. p., 1830-90 



Including the following authors :— J. F. Encke, '30 : Chr. Hansteen, '49 : E. Plantamour, '73 : G. Lorenzoni, '75 : C. 

 Weyprecht, '77 : K. Oertel, '85 : II. Geehauyden, '88 : A. A. Rambaut, '89 ; F. Porro, '90 : and Connnissione Italiana p.r 

 la MiMira de' Gradi in Europa, '75. 



2483 LAURENT (Auguste) Methods de Ciiimie, 8vo. hf. calf gilt {nice copy) ; scarce, l'2s 6d 1854 



2484 Chemical Method, Notation, Classification, and Nomenclature, trans, by Wil- 

 liam Odling, F.R.S., 8vo. cl., 8s Cavendish Soc, 1855 



Containing the author's substitution theory. He was the first to distinguish clearly between the definitions of 

 molecular, atomic, and equivalent weights, and to point out that the substitution of hydrogen by lialogenic atoms does 

 not materially alter the properties of a chemical compound. 



2485 LAURENT (Hermann) Th^orie des Rasmus, Svo. boards, 2s Gd 1865 



2486 Traite d' Analyse ; ivith diagrams, 7 vols. Svo. hf. green morocco, cl. sides {nice set), 



£2. 15s - 1885-91 



CoNTENU:— I. Calcul Diffkkkntikl. Applications analytiques : II. Applications geom^triques : III. Calcul 

 Integral. Integrales d^finies et indefinies : IV. Theorie des functions algebiiques et leurs int^grales : V. Equations 

 DiFF^RENTiELLES ordinaires : VI. Equations aux deriv^es partielles : VII. Applications g6om6triques de la theorie des 

 equations diff'erentielles. 



2487 Tome I : Calcul Diff^rentiel, Applications Analytiques et G^om^triques, 8vo. sewn, 



5s (p. F. 10. nett) 1885 



2488 [LAURIE (James)] Examination of the Astronomical Doctrine of the Moon's Rotation, 

 with plate, 8vo. cl., 5s Edin., 1847 



The authorship of this pamphlet (which was unknown to Halkett and Laing), denying the moon's rotation, is revealed 

 in Prof, de Morgan's Budget of Paradoxes, where the work is characterized as ' a systematic attack of the character 

 afterwards made with less skill and more notice by Mr. Jellinger Synions.' 



2489 LAVOISIER (Antoine Laurent) (Euvres, publi^es par les soins du Ministre de 1' Instruction 

 Publique [Editeur : Jean Baptiste Andr6 Dumas, President de I'Acad^mie des Sciences] ; 

 with fine portrait by Levasseur, and numerous folding plates, 4 thxokvol^. 4to. boards, uncut {out 

 of print), £2. 15* Imprimerie Imp6riale, 1864-8 



The only complete edition of Lavoisier's works and memoirs ever issued. 



2490 : M^MOIRES de I'AcAD^MiE Royale des Sciences, 1782-3 [pp. 457-576, containing various 



Memoirs by Lavoisier], 2 fine copperplates, 4to. sewn, 5s 1782-3 



2491 : M^thode de Nomenclature Chimique, proposee par MM. de Morveau, Lavoisier, 



Bertholet [sic] , et de Fourcroy ; on y a joint un nouveau SystSme de Caract^res Chimiques, 

 adapt^s h. cette Nomenclature, par Hassenfratz et Adet ; with 7 tables, Svo. old mottled calf 

 gilt (VERY RARE), £1. 11* Qd 17S7 



First Edition of this important work, first propounding the principles of chemical nomenclature now in use. 



* The reform of language effected by Lavoisier was an indispensable prelude to the reform of [anti-phlogistic] thougTit, 

 The new terminology prevailed without change for 50 years, and has been fitted, by trifling modifications, to meet the 

 exigencies of recent progress.' — Ency. Brit. 



2492 Opuscules Physiques et Chimiques, Tome pr (seul paru) premiere edition ; with 



Z folding plates, 8vo. contemporary hf calf gilt (rare), £1. 1* 1774 



In this work Lavoisier first gives his investigations into the properties of air, in connexion with numerous experiment.s, 

 and lays the basis of his anti-phlogistic theory. 



2493 Seconde Edition [augnient^e] ; with 3 plates, 8vo. seiun, uncut, 10s 6c? 1801 



• Get ouvrage, k I'exception des tables, fut imprimd pendant la detention du citoyen Lavoisier '.—Avis au lecteur. 



