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



10568 LATJRANCE (Lionel) GENERAL and PRACTICAL OPTICS, with 307 diagrams, roy. Svo. cl., 

 4s Qd 1908 



'Treating more completely those subjects which are intimately connected with spectacle work'. Preface. 



10569 LAUREMBERG (Peter, Univ. Rostock) INSTITUTIONES ARITHMETICS in quibus Accurrata|>V] 

 Methodo et facili Compendio, non tantum vulgarium Numerorura et Minutiarum Astronomicarum 

 Ratio, sed etiam Doctrina Proportionum et subtilissima Algebne Fundamenta . . . explicantnv ; 

 accessit Appendix de Aritbiuetica per Cercinurn Proportion alera compendiose demonstranda, 

 Hamburgi, 1636: STRt)BI (Heinrich) ARITHMETICA : ein new kiinstlich Rechenbuch niit der 

 Zipher darifi die Aafang vii Grand der Rechenkunst | im Gantzen und Gebrocbnen | auflfc 

 klarlichest unnd verstandtlichest dargethon sind . . . Nun . . . auff's newe iibersehen | an vilen 

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

 [durcb CASPAR RUTLINGER], Ziirych, bey Johanns Woljfen, 1599 2 vols. 18rno. in 1, old white, 

 vellum (title and a few II. of the second work very slightly mended, otherwise SOUND COPIES) ; 

 very rare. 5. 5s 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 Strubius. It is probably the 

 first work on Arithmetic in German printed in Switzerland. 



10570 LAURENCE (John Z., F.R.C.S.) OBSERVATIONS on tbe SENSIBILITY of the EYE to COLOUR, 

 Svo. (pp. 8). fewn. Is Qd Glasgow, 1861 



10571 LAURENT (Auguste, de VInstitut) METHODS de CHIMIE, Svo. sewn, uncut (2 II. torn and 

 defective] ; SCARCE, JOs Qd 1854 



10572 CHEMICAL METHOD, NOTATION, CLASSIFICATION, and NOMENCLATURE, translated by 



WILLIAM ODLING, F.R.S., 8vo. cL, uncut, t. e. g. t 7s 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 THEORIE des RADICAUX DERIVES et MEMOIRES sur les SERIES NAPHTHALIQUE et 



STILBIQUE ; with diagrams, Svo. sewn, with auto, of Nevil Story Ma&kelyne, F.R.S. (scarce), 

 7s Qd [1843] 



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



10574 LAURENT (Hermann) THEORIE ELEMENTAIRE des FONCTIONS ELLIPTIQUES; with 14 

 diagrams, Svo. hf. calf, with auto, and bookplate of Prof . Lloyd Tanner, F.R.S., 2s Qd 



10575 TRAITE du CALCUL des PROBABILITES, Svo. boards (scarce), 12s 1873 



' Le present traite peut etre cpnsidere comme une veritable introduction au traite de Laplace' . Preface. 

 It includes a ' Liste des principaux Ouvrages ou Me"moires publics sur le Calcul des Probability ' (pp. 14). 



10576 LAURIE (Arthur Pillans, Principal Heriot-Watt College) The ELECTROMOTIVE FORCE of 

 IODINE CONCENTRATION CELLS in Water and Alcohol, with 2 illustrations, roy. Svo. (pp. 12), 

 sewn, Is Edin., 1908 



10577 LA WES (Sir John Bennet, F.R.S., of Rothamsted ; pioneer of artificial manures) On the 

 CHEMISTRY of FEEDING ANIMALS for the 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, 3s Qd 1851 



V. LIEBIG, No. 10846, post. 



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, Svo. (pp. 60), sewn, 2s Qd 



10380 EXPERIMENTS on ENSILAGE, conducted at ROTHAMSTED, Svo. (pp. 58), sewn,2s 1886 



The method of preserving wet cut grass, which has come to the front again during the wet summer of Ii>l5i. 



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, 3s 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, Svo. (pp. 90), sewn, with auto, and MS. notes of Prof. Story Ma&kelyne, 

 F. R. S. (scarce) ,' 6s Qd 1 855 



10584 , and Robert WARINGTON, F.R.S. : NEW DETERMINATION^ of AMMONIA, 



CHLORINE, and SULPHURIC ACID, in the RAIN-WATER collected at ROTHAMSTED, Svo. (pp. 21), 

 sewn, \s Qd 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 he 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 in 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), Svo. cl., 4s 

 (p. 10s Qd) New York [1896] 



10587 LEACH (Frederick Peacock) LIMONENE NITROSOCYANIDES and their DERIVATIVES, Svo. 

 (pp. 15), sewn, Is 1905 



