HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 135 



2712 LUBY (Thomas, pr., Fellow ofT. C. D.) COMPENDIUM of ANALYTICAL TRIGONOMETRY, folding 

 plate, 8vo. boards, 3s Qd Dublin, 1834 



This work was unknown to the author's biographer in D. N. B. 



2713 LUC (Jean Andre de; F.R.S., reader to Queen Charlotte) IDEES sur la METEOROLOGIE ; with 2 

 folding plates, 2 vols. 8vo. nice copy in contemporary mottled calf extra, 10s Qd 1787 



1 Deluc made very numerous experiments on the atmosphere, inquiring into the modes of production of clouds, rain, 

 hail, dew, etc. . . . He enunciated a point of the highest importance when he endeavoured to show that the amount of 

 water-vapour in the atmosphere, or in any closed vessel, is independent of the density of the air in any other gaseous sub- 

 stance in which it is diffused, a theory which was subsequently proved more clearly by John Dalton.' Prof. W. J. Harrison. 



2714 KECHERCHES sur les MODIFICATIONS de 1' ATMOSPHERE, con tenant 1'Histoire critique du 



Barometre et du Thermometre, leur Construction et Usage, principalement a la mesure des 

 Hauteurs, et a la correction des Refractions Moyennes; with folding plates on copper, 2 vols. 4to. 

 old brown calf extra (fine copy], 15s Geneve, 1772 



2715 - ANOTHER COPY, contemporary brown calf gilt, with arms and initials o/KiNG GEORGE III. 

 in gold on sides, \ls Qd 



The author's most important work, containing his discovery of the maximum density of water, his invention of an 

 hygrometer (based on the property of ivory expanding or contracting by the amount of atmospheric moisture), and his 

 observations on latent hoat. He was the discoverer of the ' dry pile ', afterwards improved by Zamboni, and the first to 

 give correct rules for measuring heights by the barometer. 



2716 LUDLAM (William, pr.) ASTRONOMICAL OBSERVATIONS made in ST. JOHN'S COLLEGE, 

 CAMBRIDGE, 1767-8, with Account of several ASTRONOMICAL INSTRUMENTS, with 8 folding plates 

 on copper, 4to. hf. calf gilt, with Sandhurst College bookplate (rare], 10* Cambridge, 1769 



At end are ' Problems relating to Pendulums and Clock- Work ', and ' Two Papers relating to Mr. Harrison's Discoveries, 

 given in to the Board of Longitude ', the author having been one of the three experts appointed by the board, to enquire 

 into the merits of the latter 1 ! watch. 



1 He enjoyed considerable reputation at the time for his skill in practical mechanics and astronomy, as well as for his 

 mathematical lectures.' D. N. B. 



2717 - The RUDIMENTS of MATHEMATICS, for Students at the Universities : containing an Intro- 

 duction to Algebra ; Remarks on the first VI Books of Euclid ; the Elements of Plain [sic] 

 Trigonometry, first edition, with 3 folding plates, 8vo. hf. bound, 7s Qd Cambridge, 1785 



'It became a standard Cambridge text-book, passed' through several editions, and was still in vogue in 1815.' D. N. B. 



2718 LUFF (Arthur Pearson, M.D.), and Frederic James M. PAGE: MANUAL of CHEMISTRY, 

 Inorganic and Organic, with Synopsis of the Conjoint Board and the Society of Apothecaries, 

 illustrated, 12mo. cl., 3s (p. Is Qd) 1904 



2719 [LUKIN (James, pr.)] The AMATEUR MECHANIC'S WORKSHOP: including Turning, Casting, 

 Forging, Brazing, Soldering, and Carpentry, by the Author of the ' Lathe and its Uses', 2nd Ed., 

 with plates and woodcuts, 8vo. hf. bound, 3s 1872 



Halkett and Laing erroneously attribute the authorship to ElSas Taylor. 



2720 LULLIUS (Raymundus ; ' Doctor Illuminatus ') OPERA ea qmead ad inventam ab ipso ARTEM 

 UNIVERSALEM Scientiarum Artiumque omnium brevi compendio, firmaque memoria apprehend- 

 arum pertinent, ut et in eandem quorundam Interpretum Commentarii, hoc demiim tempore 

 coniunctim emendatiora locupletioraq. non nihil edita sunt, editio princeps ; with woodcuts, 

 thick 12mo. old parchment (RARE), 2. 2s Argentina, 1598 



Raymond Lull was not only one of the most learned illustrations of the Franciscan Order, but one of the earliest of 

 mediaeval Christian missionaries (A.D. 1315). He is celebrated in a twofold capacity that of the scholastic metaphysician, 

 and that of an experienced chemist. 



EDITIO SECUNDA : accessit Iraic Edition! VALERII DE VALERIIS Patricii Veneti Aureum 

 in Artem Lulli Generalem Opus; with table, woodcuts, and diagrams (some with MOVABLE SLIPS), 

 thick 8vo. sewn (a number of II. browned, and wanting all after p. 786), 15s ibidem, 1617 



This edition is important for first containing GIORDANO BRUNO'S 'De Lulliano Specierum Scrutinio', ' De Larapade 

 Combinatoria Lulliana '. and ' De Progressu Logicae Venationis '. They are all included in the above copy, which only 

 wants the commentary by Valerius and the index. 



ARS MAGNA GENERALIS et ULTIMA, quarumcunque artium et scientiarum ipsius LULLI 

 assecutrix et clavigera et ad eas aditum faciliorem prsebens : antehac nusquam arti impressorice 

 emunctius commendata et per M. BERNH. LA VINHETA, artis illius fidelissimum interpretem 

 elimata ; handsomely printed in a small gotfjtc letter, with 4 woodcut figures and numerous pretty 

 initials, and vignette at end, sm. 4to. hf. vellum (wanting title, and wormed, but otherwise a sound 

 and tall copy] ; RARE, 1. Is Lugduni, Jacobus Marechal, sumptibus Simonis Vincent, 1517 



' His great work, which has so severely tested' the sagacity of commentators. It is the development of the method of 

 teaching known subsequently as the ' Lullian method' (afterwards revised and improved by GIORDANO BRUNO): a 

 mechanical aid to the mind in the acquisition of knowledge and the solution of all possible problems by a systematic 

 manipulation of certain fundamental notions (the Aristotelian categories, etc.). He even invented a machine to assist in 

 this great task.' 



2723 LUMIERE ELECTRIQUE (La) : Journal Universel d'Electricite" : Revue Scientifique 

 Illustree publiee sous la Direction scientifique de TH. DU MONCEL ; COMPLETE from the beginning 

 in 1879 to Dec. 1892 (Vols. 1-46), copiously illustrated, 46 vols. 4to., vv. 1-10 hf. calf gilt, and the 

 rest sewn as issued (SCARCE), 8. 8s 187P-92 



2724 - ANOTHER SET, from 1879 to 1883 (Vols. 1-10), illustrated, 10 vols. 4to. sewn, 1. Is 1879-83 



The most important French journal on the subject. It was continued in 1894 by ' Eclairage Electrique.' 



2725 LUNN (John Robert, St. John's Coll., Cantab.) Of MOTION: an Elementary Treatise, 

 diagrams, 8vo. cl., 3s Qd Cambridge, 1859 



2726 LtfPKE (Robert) ELEMENTS of ELECTRO-CHEMISTRY, treated experimentally, trans, from the 

 2nd Ed. by M. M. PATTISON MUIR, 54 woodcuts and diagrams, 8vo. cL, 3s Qd (p. 7s Qd) 1897 



2727 LTJPTON (Sydney) ELEMENTARY CHEMICAL ARITHMETIC, 12mo. cL, 2s (p. 4s Qd) 1882 



2728 LUTHER (G.) CONSTRUCTION and EQUIPMENT of GRAIN MAGAZINES, ed. and trans, by F. 

 STALLMAIER and JOSEPH Fux, 26 plates (U folding), and 116 woodcuts, roy, 8vo. boards, 3s Qd 

 (p. 7* Qd) Manchester, 1889 



