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



10568 LAURANCE (Lionel) General and Practical Optics, with 307 diagrams, roy. 8vo. c/., 

 45 Qd 1908 



' Treatin^c; more completely those subjects which are intimately connected with spectacle work '. — Preface. 



10569 LATJREMBERG (Peter, Univ. Rostock) iNSTiTUTiONEsARiTHMETic^inquibus Accuirata[M*c] 

 Methodoet facili Compendio, non tantum vulgarium NumerorumetMinutiarum Astronomicarnm 

 Ratio, sed eliam Doctrina Proportionum et subtilissima Algebrre Fundamenta . . . explicantnr; 

 accessit Appendix de Arithmetica per Cercinum Proportion alem compendiose demonstranda, 

 Hamburgi, 1636: STRtJBI (Heinricn) Arithmetica: ein new kiinstlich Rechenbuch mit der 

 Zipher darin die Aafang yn Griind der Rechenkunst | ira Gantzen und Gebrochnen [ aufts 

 klarlichest unnd verstandtlichest dargethon sind . . . Nun . . . auflfs newe Ubersehen | an vilen 

 Orten verbessert | gemehret j . . • dergleichen vormals in Teutscher sprach nie gesehen worden 

 [durch Caspar Rutlinger], Ziirych, bey Johanns Wol^en, 1599 — 2 vols. 18mo. in 1, old white 

 vellum [title and a few II. oj the second work very slightly mended, otherwise SOUND copies) ; 

 very rare, £5. 5* 1636-1599 



Two very rare works, especially the second, which is quite unknown to bibliographers (including Poggendorff, Kastner, 

 and Prof. Moritz Cantor), the only reference to it being in Professor de Morgan's ' List of 1580 Names of Authors, etc. of 

 Works on Arithmetic', where the author's name is quoted (without further particulars) as S(?-H&iHS. It is probably the 

 first work on Arithmetic in German printed in Switzerland. 



10570 LAURENCE (John Z., f.r.c.s.) Observations on the Sensibility of the Eye to Colour, 

 8vo. (pp. 8). .'ewn. Is 6c? Glasgow, 1861 



10571 LAURENT (Auguste, de VInstitut) Mj&THODE de Chimie, 8vo. sewn, uncut (2 II. torn and 

 defective)', scarce, \QsM 1854 



10572 Chemical Method, Notation, Classification, and Nomenclature, translated by 



William Odling, f.r.s,, 8vo. cl., uncut, t. e. g., Is 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 for chlorine does not 

 materially alter the properties and structure of a chemical compound— an axiom forming the basis of the substitution 

 theory. 



10573 Th^orie des Radicaux Derives et M6moires sur les Series Napiithalique et 



Stilbique ; with diagrams, 8vo. sewn, with auto, of Nevil Story Maikelyne, F.R.S. [scarce). 

 Is 6d [1843] 



The author was the first to investigate the properties of naphthaline and the compounds derived from it. 



10574 LAURENT (Hermann) Th^orie El^mentaibe des Fonctions Elliptiques ; luith 14 



diagrams, 8vo. hf. calf, with auto, and bookplate of Prof . Lloyd 'fanner, F.R.S., 2s 6d 1882 



10)75 Traite du Calcul des Probabilit6s, 8vo. boards [scarce), 12* 1873 



' Le pr^'ent traite peut etre consifl^re comme une veritable introduction au traits de Laplace' .—Pre/ace. 



It includes a ' Liste des principaux Ouvrages ou M6moires publics sur le Calcul des Probabilitds ' (pp. 14). 



10576 LAURIE (Arthur Pillans, Prma;7a; /Terio^ W^a« College) The Electromotive Force of 

 Iodine Concentration Cells in Water and Alcohol, with 2 illustrations, roy. 8vo. (pp. 12), 

 sewn, Is Edin., 190S 



10577 LA WES (Sir Jolin Bennet, f.r.s., of Rothamsted ; pioneer of artificial manures) On the 

 Chemistry of Feeding Animals for tlie Production of Meat and Manure, Svo. (pp. 21), 

 sewn, 2s Dublin, 1864 



10578 , and Sir Joseph Henry GILBERT, f.r.s.: On Agricultural Chemistry, 



especially in Relation to the Mineral Theory of Baron Liebig, with 2 coloured folding tables, 

 Svo. (pp. 41), sewn, 35 6o? 1851 



F. LiKBro, A'o. 10S46, •p'^si. 



10579 Determinations of Nitrogen in the Soils of some of the Experimental Fields 



at Rothamsted, and the Bearing of the Results on the Question of the Sources of the Nitrogen 

 of our Crops, 8vo. (pp. 60), sewn, 2* 6c? 18S3 



10580 Experiments on Ensilage, conducted at Rothamsted, 8vo. (pp.58),5eu7«,2s 1886 



The method of preserving wet cut grass, -which has come to the front again during the wet summer of VM'L 



10581 Experiments on the Mixed Herbage of Permanent Grass-Land, conducted 



for many Years in Succession on the same Land, Part III : Chemical Results, Section I, with 

 2 folding tables, roy. 4to. (pp. 72), sewn, 3* 1900 



10582 The Growth of Sugar Beet, and the Manufacture of Sugar in the United 



Kingdom, 8vo. sewn, 2s 1898 



10583 — Reply to Baron Liebig's ' Principles of Agricultural Chemistry ', with 



coloured folding plate, 8vo. (pp. 90), sewn, with auto, and MS. notes of Prof . Story Maskelyne, 

 F.R.S. [scarce), 6s 6rf * 1855 



10584 , and Robert WARINGTON, f.r.s. : New Determinations of Ammonia, 



Chlorine, and Sulphuric Acid, in the Rain-Water collected at Rothamsted, 8vo. (pp. 21), 

 sewn,\s6d 1883 



10585 The Nitrogen as Nitric Acid, in the Soils and Subsoils of some of the 



Fields at Rothamsted, Svo. (pp. 39), sewn, 2s 1883 



Sir John Bennet Lawes was a character of very unusual type— an Etonian and a country squire of long descent — who 

 was born both a chemist and a great man of business, turned his endowments to the creation of a great private fortune, 

 and spent the whole of that fortune in experiments for the benefit of the community. Though his great services were not 

 unrecognised in his lifetime lie is far from being remembered as the very remarkable man he was, and is one more 

 illustration of the exceptional men of the Nineteenth Century in England being so many, that nearly half of them escape 

 notice iu the crowd of their fellows. 



10586 LAWLER (James J.) American Sanitary Plumbing : a Practical Work on the Best 

 Methods of Modern Plumbing, etc., with 123 illustrations [including folding plates), 8vo. cl., 4s 

 (p. lO^erf) ■ New York {\%^Q'\ 



10587 LEACH (Frederick Peacock) Limonene Nitrosocyanides and their Derivatives, Svo. 

 (pp. 15), sewn, Is 1905 



