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



12808 OHIO, REPORT of the GEOLOGICAL SURVEY of, VOL. I PART II: PALEONTOLOGY, with 

 48 lithographs, besides woodcuts, thick roy. 8vo. cl., 12s 6d Columbus y 1873 



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

 of Fossil Fishes, by J. S. NEWBERRY ; and Description of Fossil Plants, by the same. 



12809 OHM (Georg Simon; F.R.S.) Die GALVANISCHE KETTE, MATHEMATISCH BEARBEITET 

 [mit Anhang : Ueber die Kraft der galvanischen Kette] ; original edition, with plate, post 8vo. 

 el. (RARE), 15s Berlin, 1827 



12810 ANOTHER COPY, hf. morocco (title and some II. slightly water-stained, but a sound and 



tall copy], 15* 



12811 NEUDRUCK, mit einem Vorwort von JAMES MOSER; with diagrams, large 8vo. sewn, 



3s Wien, 1887 



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

 measurement), which he found by applying Fourier's theory of the conductivity of heat to the electric current. 



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

 in gratitude he dedicated his Molekular-Physik ; and he at last became long after his death the hero eponyiiui.* of the 

 unit of electrical resistance. 



12812 OHM (Martin, Univ. Berlin ; brother of the above) Die ANALYTISCHE und HOHERE GEOMETRIE 

 in ihren Elementen, mit vorziiglicher Beriicksichtigung der THEORIE der KEGELSCHNITTE ; with 

 2 folding plates, post 8vo. hf. calf (back rubbed), Is tid Berlin, 1S26 



12813 Der GEIST der MATHEMATISCHEN ANALYSIS und ihr Verhiiltniss zur Schule, I. 



ABHANDLUNG, 8vo. cl. t 2s ibidem, 1842 



12814 Die KORPERLICIIE RAUM-GROSSEN-LEHRE, mit InbegrifT der spharischen Trigonometric, 



der beschreibenden Geometric, der Projektion der Sehatten und der Perspektive ; with 5 folding 

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



12815 - Die LEHRE der ENDLICHEN DIFFERENZEN und SUMMEN und der reellen Faktoriellen und 

 Fakultaten, sowie die Theorie der bestimmten Integrale, post 8vo. hf. calf gilt, 2s Qd Niirnberg, 1851 



12816 OLIVIER (Theodore, Prof, de VEcole d'Artillerie de Metz) De la CAUSE du DERAILLEMENT 

 des WAGONS sur les COURBES des CHEMINS de FER ; with 2 folding plates, post 8vo. hf. roan neat 

 (scarce), Is 6d 1846 



' La theorie du deraillement dont je donne un essai, est basee sur deux principes. Le premier est i-elatif au frottement 

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

 du M 7 agon, des resistances dues aux frottements des roues pendant le mouvement circulaire '. P. 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 discussion sixty years after or the occasion of the American boat-train running off the rails at 

 the South Western station at Salisbury. 



12817 - - COURS de GEOMETRIE DESCRIPTIVE, 2 e [derniere] Edition, avec les ADDITIONS : 

 Demonstration nouvelle des Proprietes principales des Sections Coniques, 3 vols. 4to. in 1, with 

 Atlas, containing 112 plates, 3 vols. roy. 4to. in 12 vols. hf. calf, 12* 1852-4-47 



12818 OLVEB (John S.) FAULTS and DYKES : a GEOLOGICAL STUDY of the WITWATERSRAND, with 

 numerous diagrams and 13 maps, 8vo. cl., 8s Qd (p. 1. Is) Capetown, 1911 



12319 OLYVEB [sive OLIVER] (Thomas) A NEW HANDLING of the PLANISPHERE, divided into 

 three Sections. In the first is a plaine and sensible EXPLICATION of the CIRCLES of the SPHERE, 

 and such Termes as appertaine 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, being 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, "with 

 other necessarie Matters about the MERIDIAN LINE, and the HEIGHT of the POLE, with woodcuts 

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



VERY LARGE AND FINE COPY) ; VERY RARE, 2. 10* 



Felix Kyngston, for Simon Waterson and Ralfe Jacson, 1601 

 Oliver was a mathematician as well as a physician,' and wrote learnedly in both capacities. In a dedication dated 



from Bury St. Edmunds he acknowledges obligations to 'Clauius his Astrolabe'.' D. N. B. 



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



v.-orke, besides taking the matter to be commodious, and not unpleasant for travellers.' Medication. 



12820 QMALITJS d'H ALLOY (Jean Baptiste Julien Baron d' ; F.R.S.) ELEMENTS deGKOLOGiE, 

 2e Edition ; with folding stratigraphical plate, table, and coloured map, 8vo. hf. calf (slightly 

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



' He /^ co ^ nised the leading subdivisions of the cretaceous series, and ascertained the stratigraphicai relations and 

 range of the Jurassic system.' Si?* A. Geikie. 



12321, OPPEBMANN (C. A., des Fonts et Chaussces) TRAITE COMPLET des CHEMINS de FER 



ECONOMIQUES d'Interet Local, Departementaux, Vicinaux, Industriels, Agricoles, TRAMWAYS 



Ame"ricains, Voies de Service Fixes ou Mobiles ; with Atlas, containing 48 plates, 2 vols. iinpl. 



8vo. hf. morocco (nice copy], 10-s (p. F. 35 nett sewn) 1873 



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



12S22 OPPOLZEB (Theodor Bitter v. ; Univ. Vienna) CANON der FIN STERNISSE ; with 160 plates, 

 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. 1207 to A.D. 2163. 



12823 TRAITE de la DETERMINATION des ORBITES des COMETES et des PLANETES, Edition 



francaise, publiee d'apres la 2 e Edition allemande, par ERNEST PASQUIER, l er VOLUME; with 

 diagrams, impl. 8vo. hf. roan, with editors inscr., 16s (p. F. 30 nett sewn) 1886 



The only volume translated into French 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 Motus Corpornm Cifhstittm. See No. 3374 ante for a copy of the complete original work. 



