HENRY SOTHERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 739 



14764 SCHWEINS (Franz Ferdinand, Univ. Heidelberg) Theorie der Differenzen und 

 DiFFERENTlALE der gedoppelten Verbindungen, der Producte mit Versetzungen, der Reihen, der 

 wiederliolenden Funetionen, der allgemeinsten Faciiltiiten und der fortlaufenden Briiche, thick 

 4to. tree-calf gilt, bs Heidelberg, 1825 



14765 SCHWENTER (Daniel) Geometric Practice Nov^e. Traetatus I. Darinnen auss rechteni 

 Fundament gewisen wird ; wie man in der Geometria auff dem Papier und Lande, mit denen darzu 

 gehiirigen Instrumenten, als Circkel, Richtscheid, Winckelhacken, etc. zur noht ohne dieselben 

 verfahren unnd operiren solle. Traetatus H. Ohne einig Kiinstlich Georaetrisch Instrument, 

 allein mit der Messruhte vnd etlichen Stiiben (welche ein Landmesser des absteckens halben nit 

 wol entrahten kan) zur noht, vielerley weite, breite, liinge, hiihe und tieftezu erkundigen, etc. etc. 

 Traetatus III. Beschreibung des Nutzlichen Geometrisciien Tischleins, von Johanne 

 Prjetorio STeelig] erfunden, u. s. w. ; with engraved titles, and numerous woodcuts and diagrams, 

 3 vols. sm. 4to. in 1, old white vellum [some II. slightly wormed, otherwise a sound and clean 

 copy) ; rare, £1. 10« Niirnberg, 16[16-]18 



First Edition' of this important work, which went through several editions, and contains the author's discovery, 

 independently of Cataldi, of continued fractions. 



* Schwenter's praktische Geometria erfreute sich einer Beliebheit welche ein Eingehen auf ihren Inhalt einpfehlen 

 nifjsste, selbst wenn wir nichts von Bedeutung ihr zu entnehmen htitten. . . . In Traetatus I lehrt er die verschieden- 

 artigsten theils genaue, theils nur angenaherte Konstruktionen, wie sie bei Diirer, bei Clavius u. s. w. sich linden, auch 

 einige neue Verfahruugsmethoden. . . . Im Traetatus III hat er den Messtiscli, welchen sein Lehrer erfunden, und zu 

 dessen Gebrauch er wiihrend des Unterrichtes die nothige Anweisuug geceben hatte, ohne eine ausfuhrlicheBeschreibun^t 

 desselben zu verutlentlichen, nachtriiglich zur allgemeinen Kenntnissgebrachtund dadurchdemallgemeinenNutzen einen 

 wesentliclien Dienst crwiespn.' — Prof. < anfor. 



14766 SCHWEREBESTIMMUNGEN (Relative), durch Pendelbeobachtungen, ausgpfuhrt 

 durch die K. und K. Kriegs-marine, 1892-4, herausgegeben vom K. und K. Reichs-Kriegs- 

 Ministerium, Marine- Section ; with 2 folding plates, and 3 coloured folding maps, roy. 8vo. 

 (pp. 630), sewn, %s (p. M. 18.40) * Wien, 1895 



14767 SCHYANOFF (Alexandre, Capitaine de VArm6e russe) EssAl sur la Mktaphysique des 

 Forces, inheientes {\ I'Essence de la Matiere, et Introduction a une nouvelle Theorie Atomo- 

 Dynamique, Memoire I et II, 2^ Edition, considerablement augmentee ; with numerous diagi ams, 

 impl. 8vo. (pp. 187), setvn (scarce), 10s (yd Kiew, 1868 



' La these principale du present memoire consiste k prouver, qu'il existe dans la nature deux espfeces de matiere creee : 

 la matiere ponderable et Tether. L'une et I'autre ont pour cause fondanientale la force repulsive, formulee par I'impene- 

 trabilite. La force, relative a la matiere ponderable, agit en raison inverse des cubes des distances ; I'autre est reciproque 

 aux cinquiemes puissances.' — Preface. 



The author extensively uses the calculus in his speculations on the constitution of matter. 

 A COMPLETE SET OF BOTH SECTIONS TO 1910: 



14768 SCIENCE ABSTRACTS : Physics and Electrical Engineering, issued by the Institution 

 of Electrical Engineers, with the Co-operation of the Physical Society of London, the American 

 Physical Society, the American Institute of Electrical Engineers, and the American Electro- 

 Chemical Society, both sections complete from the Beginning in 1898 to 1910 (Vols. I— XIII), 

 illustrated, with the Indexes— 21 vols. 8vo. in 273 parts, sewn, £10. 10s (p. £18. 165nett) 1898-1910 



14769 Another Set. complete from the Beginning in 1898 to 1912 (Vols. I —XV) [w. VI— 



XV, Section A: Physics only], illustrated, 4 vols. 8vo. cL, the rest in parts as issued, £8. 8.? 

 (£15. 2s nett) 1898-1912 



14770 Another Set, complete to 1909 (Vols. VI— XII Section A : Physics only), 12 vols. 



Svo. cl. (v. XII sewn), £7. 15* (p. £14. 2s nett) 1898-1909 



14771 Another Set, complete to 1902, 5 vols. 8vo. cl., £3. 10* (p. £7. 4* nett) 1898-1902 



Section A contains Light, including Photography ; Heat ; Sound : Electricity and Magnetism ; Chemical Physics and 



Electro-Chemistry ; General Physics ; Meteorology and Terrestrial Physics : Physical Astronomy ; and Section B 

 Steam Plant, Gas and Oil Engines; Automobiles: Oil-engine driven Ships and Launches; Balloons and Airships; 

 General Electrical Engineering, including Industrial Electro-Chemistry ; Electric Generators ; Motors and Transformers ; 

 Electrical Distribution, Traction and Lighting ; Telegraphy and Telephony. 



' We may point out that a vast amount of tedious research may frequently be saved by consulting its pa^'es when 

 investigating matters relating to questions of design, working and organisation. Special attention is also given by the 

 editorial staff to the capital outlay and working costs of existing undertakings . . . ' Science Abstracts ' is not, like many 

 periodicals, of purely ephemeral interest ; its value increases at an increasing rate as time goes on. Already its seven fat 

 volumes form a substantial addition to the library, and constitute a complete record of progress during the correspond- 

 ing years. We can, from personal experience, vouch for its worth, and cordially recommend it to our readers.'— Electrical 

 Review {London). 



DR. W. B. CARPENTER'S COPY : 



14772 SCIENTIFIC MEMOIBS, selected from the Transactions of Foreign Academies of 

 Science, and Learned Societies, and from FOREIGN Journals, edited by Richard Taylor, 

 F.S.A., with 59 plates {mostly folding and some coloured), besides woodcuts, 5 thick vols. 8vo. hf. calf 

 gilt, with Dr. W. B. Carpenter's booklabel [nice copy) : very scarce, £3. 10s 18.37-52 



A DESIRABLE SET OF THIS IMPORTANT PUBLICATION, Containing tran.slations (in many ca.ses the only ones) of a number of 

 rare and important memoirs, some of which are now practically unprocurable in the originals. They include, among 

 others, the following authors : Arago, E. Becquerel, J. J. Berzelins, F. W. Bessel, J. B. Biot, R. W. Bunsen, A. L. 

 Cauchy, R. J. E. Clausius, H. W. Dove, J. F. Encke. A. J. Fresnel, K. F Gauss, P. A. Hansen, H. L. F. v. Helmholtz, 

 Joseph Henry, M. H. Jacobi, J. Lamont, M. Melloui, O. F. Mossolti, Jolianui-.s .Muller, F. E. Neumann, J. A. F. Plateau, 

 H. V. Rpgnault, A. Seebeck, and Wilhelm Weber. 



14773 SCOPOLI (Giovanni Antonio ; Univ. Pavia) Elementi di Chimica e di Farmacia, Svo. 

 tree-naif ailt, by Kalthoeber, As Pavia, 1786 



14774 SCOTT (Benjamin; scientific instrument maker) The Description and Use of an Universal 

 and Perpetual Mathematical Instrument, shewing the most expeditious and exact Method 

 of solving all practical Questions in Arithmetick, Trigonometry, Navigation. Dyalling, Astronomy, 

 etc., with diagrams and folding table on copper, I'Imo. old calf (joints weak), rare, \Qs Qd 1733 



Dedicated to John Boyle, 5th Earl of Cork and Orrery, f.r s. The instrument is stated to consist of ' 20 circles, 12 seg- 

 ments of circles, and 3 tables.' The work is not noticed by Watt, Lowndes, or Allibone. 



