HENRY SOTHERAN & CO., 140, STRAND, W.C, AND 43, PICCADILLY, VV. 639 



12808 OHIO, Report of the Geological Survey of. Vol. I Part II: Pal.f.ontologv, vMh 

 48 lithographs, besides woodcuts, thick roy. 8vo. c/., 12s i\d Columbus^ 1873 



Containing Descriptions of Invertebrate Fossils of the Silurian and Devonian Systems, by F. B. Meek ; Descriptions 

 of Fossil Fishes, by J. 8. Newberry ; and Description of Fossil Plants, by the same. 



12809 OHM (Georg Simon; F.E.S.) Die Galvanische Kette, mathematisch bearbeitet 

 [mit Anhang : Ueber die Kraft der galvaiiischen Kette]; original edition, with plate, post Svo. 

 rl. (RARE), 155 Berlin, 1827 



12810 Another Copy, hf. morocco {title and some 11. slightly water-stained, but a sound and 



tall copy), 15s 



12811 Neudruck, mit einem Vorwort von James Moser; with diagrams, large S\o. sevm, 



3s Wien, 1887 



This classic work contains the iniix)rtant discovery known as Ohm's Law (the basis of the present system of electrical 

 measurement), wliich he found by api)lying Fourier's theory of the conductivity of heat to the electric current. 



His work, neglected and even ridiculed in Germany, was awarded the Copley me<lal by the Royal Society, to whom 

 ill .i,'ratitude he dedicated his JUolektilar-Physik ; and he at last became long after his death the /k/o cpmym"^ of the 

 unit of .'leclrical resistance. 



12S12 OHM (Martin, Univ. Berlin ; brother of the above) Die analytische und HOHERE Geometrie 

 in ihren Elenienten, mit vorziiirlicher Beriieksichtigung der Theorie der Kegelschnitte ; with 

 2 folding plates, post 8vo. hf. calf {hack rubbed), \s 6rf Berlin, 182fi 



12813 '- Der Geist der mathematischen Analysis und ihr Verhaltiiiss z\ir Schule, I. 



Abuandlung, Svo. cL, Is ibidem, 1842 



12814 Die K()RPERLICHE Raum-Gr()SSEN-Lehre, mit Inbegriftdersphiirischen Trigonometric, 



der beschreibenden Geometric, der Projektion der Sehattcn und der Perspektive ; with b folding 

 plates, post 8vo. hf calf {back rubbed). Is 6d ib., 1826 



1-2H15 Die Lehre der endlichen Differenzen und Summen und der reellen Faktoricllen und 



Fakultaten, sowie die Theorie der bestimmten Integrale, post Svo. hf calf gilt, 2s 6d Niirnherg, 1851 



12816 OLIVIEB (Theodore, Prof de VEcole d'Artillerie de Metz) De la Cause du D6RAILLEMENT 

 des Wagons sur les Courbes des Chemins de Fer ; with 2 folding plates, post Svo. hf. roan neat 

 {scarce). Is 6d 1846 



• I^ theorie du deraillement dont je donne un essai, est basee sur deux princip<!s. Le premier est rehitif au frottement 

 de glissement qui fait naitre la force centrifuge . . . le second est relatif aux moments, par rapport :iu centre de gravite 

 du wagon, des resistances dues aux frottements des roues pendant le mouvement circulaire '. — F. 1. 



The treatment is mathematical. The true process of derailment at a curve, whether by mounting the rail or by actual 

 overturning, was still under discu.ssion sixty years after or. the occasion of the American boat -train running oft" the nils at 

 the South Western station at Salisbury. 



12817 CouRS de Geometrie Descriptive, 2^ [dernierc] Edition, avec les Additions : 



Demonstration nouvelle des Proprietes principales des Sections Coniques, 3 vols. 4t<). in 1, with 

 Atlas, containing 112 plates, 3 vols. roy. 4to. in 1 — 2 vols, hf calf, 12s 1S52-4-47 



12S18 OLVER (John S.) Faults and Dykes : a Geological Study of the Witwatersrand, with 

 numerous diagrams and 13 maps, Svo. cl., Ss- Qd (p. .£1. Is) Capetovui, 1911 



12819 OLYVEB. Isioe OLIVEB] (Thomas) A New Handling of the Planisphere, divided into 

 three Sections. In the tirst is a plaine and sensible Explication of the Circles of the Sphere, 

 and such Termes as api)ertaine vnto the Doctrine de primo mobili ; after a Method not heretofore 

 vsed in any Language. The second sheweth how vpon any Plaine, being Paper, Pastboord, or a 

 Lattenplate, having one Circle diuided into Degrees, and crossed with two Diameters at right 

 Angles, most Conclusions of the Astrolabe may for all Latitudes or Countries be readily and 

 exactly performed onely with Ruler and Compasses. In the third, l)eing a Supplement 

 organicall, is contained the Making of certaine easie Instruments for the perfecter working the 

 former Conclusions, as to know what Degrees and Minutes be in any Circumference given, witli 

 other necessarie Matters about the Meridian Line, and the Height of the Pole, with woodcuts 

 and numerous diagrams, sm. 4to., btacfe letter; sewn {top-margin of one I. dust-soiled, otherwise a 



VERY large and FINE COPY) ; VERY RARE, £2. lOs 



Felix Kyngston. for Simon Waterson and Ralfe Jacson, 1601 

 'Oliver was a mathematician as well as a i)hysician, and wrote learnedly in botli capacities. In a dedication dated 



from Bury St. Edmunds he acknowledges obligations to ' Clauius his Astrolabe'.'— Z). N. B. 



' My constructions were v.'ry farre differing from Clauius, amending those defects which Gemma noteth in Roias his 



worke, besides taking the matter to be commodious, and not unplea.sant for travellers.'— V^rf/cafion.. 



12820 OMALnjS d'HALLOY (Jean Baptiste Julien Baron d' ; f.r.s.) Elements deGHOLOGiE, 

 2« Edition ; with folding stratigraphical plate, table, and coloured map, Svo. hf. calf {slightly 

 stained and binding damaged) ; scarce, 5s 6d 1835 



' He recognised the leading subdivisions of the cretaceous series, and a<certained the stratigraphical relations and 

 i-ange of the.juras.sic system.'— .S'/r A. (hlk'u. 



12321, OPPEB.MANN (C. A., des Fonts et Chaussres) Traite Complet des Chemins de Fer 

 ECONOMIQUES d'Interet Local, Departementaux, Vieinaux, Industriels, Agricoles, Tramways 

 Americains, Voies de Service Fixes ou Mobiles ; with Atlas, containing 48 plates, 2 vols. impl. 

 Svo. hf morocco (nice copy), 10s (p. F. 35 nett sewn) 1873 



An early extensive treatise on light or narrow-gauge railways and tramways. 

 12S22 OPPOLZEB (Theodor Ritter v. ; Univ. Vienna) C ANON der FINSTERNISSE ; with KiO platen, 

 roy. 4to. hf morocco gilt, £2. 15* (p. M. 85 sewn) Wien, 1887 



The most important catalogue of solar and lunar eclipses published. They extend from b c. 12(»7 to a.d. -JIG?.., 



12823 Traite de la Determination des Orbites des CoMiiTES et des Planktes, Edition 



francaise, publiee d'aprcs la 2e Edition allemande, par Ernest Pasquier, V Volume ; with 

 diagrams, impl. Svo. hf. roan, with editor s inscr., 10* (p. F. 30 nett sewn) 1886 



The only volume translated into Frencli of this monumental work, the most complete treatise ever issued on the 

 calculation of the orbits of comets and planets, and representing a wholly new treatment of the subject, and to some 

 extent superseding Gauss's Theoria Motm Corporiivi Cfrhsticm. See No. 3374 ante for a copy of the complete original work. 



