HENRY SOTHERAN & CO., 140, STRAND, W.C, AND 43, PICCADILLY, W. 519 

 10410 LA HARPE (Clement de) Notes et Formules de 1'Ingexieur et du Constructeur- 

 Mecanicien : Matliematiqiies, Mecanique, Electricite, Chemins de Fer, Mines, Metallurgie, 

 etc., par iia Coinite d'Ingenieurs, sous la Direction de Ch. Vigreux, Ch. Milandre, et R. P. 

 Boui,>UET, 15*^ [derniere] Edition, considerablement au^nnentee, avec Yocabulaire Technique 

 en francais, anglais, alleraand ; with 15 illustrations^ large 12mo. (pp. 2002), roatit Is (p. F. 14 

 nett) ' ^ 1907 



10 til LA HIKE (Philippe de, de VAcad6mie des Sciences) Memoires de Mathematique et de 

 Phvsique, contenant iin Traite des Epicycloides, et de leurs Usages dans les Mechaniques ; 

 I'Explication des principaux Effets de la Glace et du Froid ; Dissertation des Differences 

 des Sons de la Corde de la Trompette Marine ; et Traite des ditierens Accidens de la Vue ; 

 vnth woodcuts and numerous diagrams, 4to. old calf gilt (RARE), 17* 6d Imprimerie Eoyale, J 694 



10412 Another Copy, old calf, newly rebacked, with British Museum stamp on title, I6s 6d 



Including the author's valuable treatise on epicycloids, and their application to mechanics, chiefly founded on the 



teaching of Desargues. The second treatise contains an investigation on the thermometer. 



10413 Tables Astronomiques, avec les Mouveniens du Soleil, de la Lune, et des autres 



Planetes, deduits des seules Observations, et inddpendamment d'aucune Hypothese ; la M6thode 

 du Calcul Astrononiique, et le Calcul des Eclipses par ia seule Trigonometric rectiligne ; la Descrip- 

 tion et r Usage des Instrumens d'Astrononiie, etc. etc. etc., 3'"^ Edition ; with 4 folding plates of 

 astronomical instruments, etc., besides numerous diagrams, 4to. old calf, newly rebacked, 

 lOsfid ' 1755 



Containing a description of a machine of the author's invention showing the theory of eclipses. 



10414 Traite de Mecanique, oii Ton explique tout ce qui est ndcessaire dans la Pratique des 



Arts, et les Proprietes des Corps Pesants lesquelles ont un plus grand Usage dans la Physique ; 

 urith woodcuts and numerous diagrams, 12nio. old mottled calf {>iound copy), with auto, of George 

 Rennie, F.R.S., on title {rare), lbs Imprimerie Royale, 1695 



A cnpious treatise on the subject, and more especially on percussion, which the author claims to be larg»^ly original. 

 It contains a description of .several iiitercstrng hydraulic machines. 



10415 LAIS (Giuseppe, D.o., Osservatorio Pontifico) Prolegomeni alio STUDIO delle BURRASCHE 

 del Clima di Koma ; with folding chart, 4to. (pp. 32), sewn, 3* Roma, 1873 



10416 LAISANT (Charles Anne) Introduction k la MtrnoDE des Quaternions; with diagrams, 

 Svo. sewn, :is 6d 1881 



10417 LAKE (W. R.) Patents for Inventions relating to Machine-Guns and Automatic 

 I>reech-Mkchanism [1854-95], with numerous plates, roy. 8vo. boards, 5s [c. l'^96] 



10418 LALANDE (Joseph Jerdme Le FranQOis de; deVInstitut. f.r.s.) Astronomie, 2^ Edi- 

 tion, revue et augment^e [avec Tables Astronomiques calculees pour le M(^ridien de Paris 

 jusqu'^ 1770 (pp. 248)] ; with ^Q folding plates, 4 thick vols. 4to. old calf, £1 . Is 1771-81 



' Cet ouvrage, qui est son principal titre d« gloire, est un repertoire complet de tout ce que Ton savait alnrs et de 

 beaucoup de methodes peu rdpandues.'— L'iogr/*. Gen. He determined the parallax of the moon on a voyage to the Cape of 

 Good Hope. 



Vol. I includes an interesting list of astronomical instruments and their prices. 



Vol. IV, which is often mv^dng, contains : Trait6 du flux et du reflux de la mer ; Memoire sur I'origine des constella- 

 tions, et sur I'explication de la fable, par le moyen de I'astronomie, par M. Dupuis. A few copies of this volume were 

 issued with a separate title. It was never reprinted nor re-issued with the 3rd Edition of 1793. 



10419 , Catalogue of those Stars in the Histoire Celeste FRANgAisE of, for which Tables 



of Reduction to the Epoch 1800 have been published by Prof. Schumacher, reduced at the 

 Expense of the British Association of Science, under the Superintendence of Francis Baily, f.r.s., 

 thick 8vo. (pp. 1218), boards, uncut (scarce), £1. 10s 1847 



Lalande's Histoire Celeste, which was first published in 1801, gives the places of 47,390 stars, but ' in the rough, as it 

 were, and consequently needing laborious processes of calculation to render them available for exact purposes.' To 

 obviate these defects, its reduction was undertaken by the British Association in 1837-S at the instance of Baily, and 

 published in a form ' which first rendered the work practically available' {Miss Agnes M. Clerlce). 



10420 Exposition du Calcul Astronomique ; unth 3 folding plates, 12mo. contemporary 



mottled calf extra, with author's auto, pasted on flyleaf 5s Imprimerie Royale, 1762 



10421 Tables de Logaritmes [sic], pour les Nonibres, et pour les Sinus, Edition stereotype; 



24nio. seivn, 2s F. Didot, An X (1802) 



10422 [ ] Tables of Logarithms [edited and revised by Richard Farley], 16nio. sewn, 2s 



S.D. U.K., 18.S9 



10423 , Catalogue des Livres composant la Bibliotheque de feu, dont la Vente aura Lieu 



ilans le courant du Moi de Mars 1808, au College de France, 8vo. sewn {scarce), 6s [1808] 



The library consisted of 2000 lots, 1210 of which were astronomical, mathematical, and physical works. At end is aa 

 index of authors. 



10424 LAMBERT (Johann Heinrich) Photometria, sive de Mensura et Gradibus Luminis, 

 Colorum, et Umbr^, editio princeps; with ^folding plates, large 12mo. sound copy in 

 contemimrary German hf crt//'(RARE), CI. 10* Augustae Vindelirorum, 1760 



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

 propounds in it the law of the absorption of light named alter him, and describes the photometer invented by him. 



10425 Pyrometrie, Oder vom Maasse des Feuers und der Warme, 1. Ausgabe ; with 8 



folding plates, 4to. contemporary boards {large and sound copy) ; RARE, ivith autos. of 0. Buzen- 

 geiger (1771-1835), and R. Lipschitz, £1. 55 Berlin, 1779 



' Lamliert's most important work, Pyrometrie (Berlin, 1779), is a systematic treatise on heat, containing the records and 

 full discussions of many of his own experiments.'— J?7iq/. Brit. 



It enumerates 19 ditferent thermometric scales, and includes numerous experiments with Amonton's air thermometer, 

 which enabled the author to approximate the absolute zero of temperature to - 270-3'' C. 



10426 SvsTiJME du Monde, public par [Hans Bernhard] Merian, 2^ Edition, sm. 8vo. hf. 



vellum (rare). Is 6d ibidem, 1784 



' His conceptions were grandiose, his intuitions bold, his views on some points a singular anticipation of subsequent 

 discoveries.'— Jl/f'<.< Agnes M. Clerlce. 



' Lambert conjectured the existence of binary stars.'— G. F. Cluxmbers. 



35 * 



