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

 10410 LA HARPE (Clement de) NOTES et FORMULES de I'INGEXIEUR et da CONSTRUCTEUR- 

 MECANICIEN : Mathematiques, Mecanique, Electricite, Chemins de Fer, Mines, Metallurgie, 

 etc., par un Comite d'Ingenieurs, sous la Direction de CH. VIGREUX, CH. MILANDRE, et R. P. 

 BOUQUET, 15 e [derniere] Edition, considerablement augmentee, avec VOCABULAIRE TECHNIQUE 

 en francais, anglais, allemand ; with 15 illustrations, large 12mo. (pp. 2002), roan, 7s (p. F. 14 

 nett) 1907 



10 til LA HIRE (Philippe de, de V Academic des Sciences] MEMOIRES de MATHEMATIQUE et de 

 PHYSIQUE, contenant un TRAITE des EPICYCLOIDES, et de leurs Usages dans les Mechaniques ; 

 1'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 differens ACCIDENS de la VUE ; 

 with woodcuts and numerous diagrams, 4to. old calf gilt (RARE), 17s 6d Imprimerie Royale, 1694 



10412 ANOTHER COPY, old calf, newly rebacked, with British Museum stamp on title, 16s Qd 



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 Mouvemens du Soleil, de la Lune, et des autres 

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

 du Calcul Astronomique, etle (/alcaldes Eclipses par la seule Trigonometric rectiligne ; la Descrip- 

 tion et 1' Usage des Instruraens d' Astronomic, etc. etc. etc., 3 me Edition ; with 4 folding plates of 

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

 10,- (yd 1755 



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



TRAITE de MECANIQUE, oil Ton explique tout ce qui est necessaire dans la Pratique des 

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

 with wsodcuts and numerous diagrams, 12mo. old mottled calf (sound copy), with auto, of George 

 Rennie, F.R.S., on title (rare), 15s 'Imprimerie Roy ale, 1695 



A copious treatise on the subject, and more especially on percussion, which the author claims to be largely original. 

 It contains a description of several interesting hydraulic machines. 



10415 LAIS (Giuseppe, D.O., Osservatorio Pontiftco) PROLEGOMENI allo STUDIO delle BURRASCHE 

 del CLIMA di ROMA ; with folding chart, 4to. (pp. 32), sewn, 3s Roma, 1873 



10416 LAIS ANT (Charles Anne) INTRODUCTION a la METHODS des QUATERNIONS; withdiagrams, 

 8vo. sevm, 3s 6d 1881 



10417 LAKE (W. R.) PATENTS for INVENTIONS relating to MACHINE-GUNS and AUTOMATIC 

 BREECH-MECHANISM [1854-95], with numerous plates, roy. 8vo. boards, 5* [c. 1?96] 



10418 LALANDE (Joseph Jer6me Le Franqois de ; de I'lnstitut, F.R.S.) ASTRONOMIE, 2 e Edi- 

 tion, revue et augmentee [avec TABLES ASTRONOMIQUES calculees pour le Meridien de Paris 

 jusqu'a 1770 (pp. 248)] ; ivith 46 folding plates, 4 thick vols. 4to. old calf, 1 . Is 1771-81 



' Get ouvrage, qui est son principal titre de gloire, est un repertoire complet de tout ce que Ton savait alors et de 

 beaucoup de methodes peu repandues.' Biogr. 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 missing, contains : Trait6 du flux et du reflux de la mer ; Memoire sur 1'origine des constella- 

 tions, et sur 1'explication de la fable, par le moyen de I'astrpnomie, 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 FRANCAISE 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 Uistoire 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 1837-8 at the instance of Baily, and 

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



EXPOSITION du CALCUL ASTRONOMIQUE ; with 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 Nombres, et pour les Sinus, Edition stereotype; 



24mo. sewn, 2s F. Didot, An X (1802) 



10422 [ ] TABLES of LOGARITHMS [edited and revised by RICHARD FARLEY], 16mo. sewn, 2s 



S.D. U.K., 18S9 



10123 , CATALOGUE des LIVRES composant la BIBLIOTHEQUE de feu, dont la Vente aura Lieu 



dans le courant du Moi de Mars 1808, au College de France, 8vo. sewn (scarce), 6s [1803] 



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

 index of authors. 



10424 LAMBERT (Johann Heinrich) PHOTOMETRIA, sive de MENSURA et GRADIBUS LUMINIS, 

 COLORUM, et UMBRAE, editip princeps ; with 8 folding plates, large 12mo. sound copy in 

 contemporary German hf. CG^/'(RARE), 1. 10s Augustae Vindelicorum, 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, ocler vom MAASSE des FEUERS und der WARME, 1. Ausgabe; with 8 



folding plates, 4to. contemporary boards (large and sound copy) ; RARE, with autos. of C. Buzen- 

 geiger (1771-1835), and R. Lipschilz, 1. 5s Berlin, 1779 



' Lambert'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.' Ency. Brit. 



It enumerates 19 different 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. 



SY/STEME du MONDE, public par [HANS BERNHARD] MERIAN, 2 e Edition, sin. 8vo. hf. 



vellum (rare), Is Qd ibidem, 1784 



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

 discoveries.' Jlfi Agnes M. Clerke. 



'Lambert conjectured the existence of binary stars.' G. F. Chambers. 



