516 HENRY SOTHERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 



10348 KUNZEK (August) Studien aus der hoheren Physik ; with 64 woodcuts, 8vo. hf. calf neat, 

 2s Wien, 1856 



10349 LAAS (Walter; Charlottenhurg) Die grossen Segelschiffe : ihre Entwickelung und 

 Zukunft; with 77 illustrations [includinq folding plates), cr. 4to. sewn, 45 (p. M. 6) Berlin, 1908 



10350 LA BECHE (Sir Henry Thomas de, f.r.s , founder of South Kensington School of Mines) 

 The Geological Observer, with 309 woodcuts. 8vo. (pp. 887), cL, uncut, %s 1851 



10351 Another Copy, hf morocco neat, 7s 



' One of the fullest descriptions of the older fossiliferous rocks, with copious list of fossils, will be found in the first 

 edition of De la Beche's Geological Memoir (1851), p. 433.'— Sir A.Geikie. 



10352 Second [last] Edition, revised, with 308 woodcuts, thick 8vo. hf morocco gilt, or, 



hf calf gilt, 9s Qd - 1 853 



10353 Another Copy, hf. calf (rubbed), 8s 



10354 How to OBSERVE: Geology, 2nd Edition, with 138 woodcuts, large post 8vo. cL, uncut, 



with Lord Napier's bookplate, 2s 1836 



10355 Report on the Geology of Cornwall, Devon, and West Somerset, with U plates 



and coloured map {all folding), besides woodcuts, thick 8vo. cL, uncut {scarce), \0s 6d 1>^39 



' It is not too much to say that the publication of these works fthe above and the ' Geological Observer'] would alone 

 have placed him in the first rank of geologists. In them he exhibits the most varied acquirements, applying almost 

 every branch of science to the elucidation of geological facts. Notwithstanding the rapid advancement of geological 

 knowledge, these books will long continue to be well worthy of the earnest study of every geologist.'— Pro/. W. J.hanison. 



10356 Selection of the Geological Memoirs contained in the Annales des Mines, with 



Synoptical Table of Equivalent Formations and M. Brongniart's Table of the Classifi- 

 cation of Mixed Rocks, trans., with Notes, 11 folding plates and maps {some coloured), 8vo. blue 

 calf gilt, 5s 6d 1824 



, The author's first published work. 



10357 LA BLANCHEBE (Pierre Rene Marie Henri MouUin, dit Henri de) L'Art du 

 Photographe, comprenant les Precedes complets sur Papier et sur Glace Negatifs et Positifs ; 

 2*^ Edition, augnientee ; with 33 illustrations, 8vo. hf roan, 3s 1860 



10358 LABORATORY (The), or School of Arts : in which are faithfully and fully explained a 

 Variety of Curious and Valuable Experiments in Refining, Calcining, Melting, Assaying ... of 

 Gold . . . Choice Secrets for Jewellers, the Art of making Glass, the Nature and GroAvth of 

 Saltpeter, etc. etc., translated from the German [by G. Smith], with 5 copperplates, 8vo. old calf 

 {joints cracked), 6s 6d 1739 



This work was unknown to Watt. 



10359 LA GAILLE (Abbe Nicolas Louis de, f.r.s.) Lecons Elementaires d'AsTRONOMiE 

 geom^trique et physique ; nouvelle Edition, augmentee; with 9 plates, 8vo. old calf, 3s 6d 1764 



10360 The Elements of Astronomy, deduced from Observations ; and demonstrated on the 



Mathematical Principles of the Newtonian Philosophy, with a Treatise of Projection in 

 general, translated by John Robertson, f.r.s., with Additions and Corrections communicated 

 by the Author, with 10 folding plates, thick 8vo. contemporary calf {back slightly damaged), 

 5s 1750 



10361 Traite d'OPTiQUE, revu, corrige et augmente particuli^rement de la Mesure de la 



Refraction, de son Explanation physique, de la Marche des Images dans les Instrumens 

 d'Optique,, des Lunettes achromatiques, de I'Iris, et de quelques Problemes interessans, par 

 plusieurs El^ves de I'Ecole Polytechnique ; 2^ Edition, suivie du Traite de la Perspective du 

 mdme Auteur; with 15 folding plates, 8vo. sewn, 5s 1808 



• The Abbe ' La Caille, who, like Franz Liszt, never proceeded beyond Deacon's Orders, is perhap.s best known for his 

 four years' astronomical mission to the Cape of Good Hope in 1750, when he was the first to group and to name most of 

 the Southern constellations. According to Lalande, 'La Caille a fait a lui seul plus d'observations et de calculs que 

 tous les astronomes de son temps reuuis. On doit admirer du moins kurs extreme exactitude, giilcedu soin qu'il prenait 

 de rep^ter ses observations.' 



10362 LACHLAN (R., Trinity Coll., Cantab.) Elementary Treatise on Modern Pure 

 Geometry, with numerous diagrams, 8vo. cl., is 6d (p. 9*) 1893 



10363 LACHMAN (Arthur, Univ. Oregon) The Spirit of Organic Chemistry : an Introduction 

 to the Current Literature of the Subject, with Introduction by Paul C. Freer, m.d., cr. Bvo. cL, 

 45 (p. 6s 6d nett) New York, 1899 



10364 LA CONDAMINE (Charles Marie de) Journal du Voyage fait par Ordre du Roi h 

 1'Equateur, servant d'Introduction historique h la Mesure des trois premiers Degres du 

 Meridien ; with fine plates and maps {chiefy folding), '51; avec les 2 Supplements, '52-4 — ■ 

 3 vols. 4to. in 2, old calf gilt, newly rebacked (fine copy) ; rare, £1. 1* 



Imprimerie Roy ale, 1751-4 

 The supplements also contain the author's reply to Bouguer, who attacked him shortly after their return to France. 



10365 Mesure des Trois Premiers Degres du Meridien dans I'Hemisphere Austral ; 



with 3 folding plates, and vignette, 4to. old calf gilt, newly rebacked {fine copy) ; rare, ^2s 6d 



apud eandem, 1751 



These two works form the account of the author's geodetic mission to Peru, in conjunction with Bouguer, Juan, and 

 Unoa(97. V. ante), for measuring the meridian near the equator, in co-operation with another mission sent to Lapland and 

 led by Maupertuis, Clairaut, and Celsius, to measure the meridian near the North Pole. The result of these two missions 

 first established the correctness of Newton's views of the earth having the shape of an ellipsoid— a fact previously much 

 doubted as the result of a faulty meridian-measurement by Cassini and Picard. 



' This is the account of the scientific operations, divided into 2 parts. The first relates to the goedetical measurements, 

 and the f^econd to the astronomical observations. Pp. 239-58 contain an important discussion of Picard's operations '. — 

 Prof. Todhuufer. 



10366 LA COUDRAYE (Fran9ois Celestin de Loynes, Chevalier de) Theorie des Vents, 

 Piece couronnee en 1785 par I'Academie Royale de Dijon; with large folding map, 8vo. sewn, 

 uncut {rare), 9s ' Fontenay, 1785 



