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



14558 ROYAL SOCIETY of LONDON, Meteorological Journal kept at the Apartments of 

 the, by Order of the President and Council, 1787-95, 9 parts 4to. sewn (rare), 8s 1788-96 



14559 ROZIER (Abbe FranQois, Chevalier de VEglise de Lyon) Memoire sur la Meilleure 

 Maniere de Faire et de Gouverner les ViNS de Provence, soit pour I'Usage, soit pour leur 

 faire passer les Mers ; with ^folding copperplates, 8vo. sound copy in contemporary mottled calf 

 gilt, 105 Qd Lausanne, 1772 



With old trade-label 'Du Catalogue des Freres Perisse, Imprimeurs-Libraires a Lyon. 177—'. 



14560 Another Copy [with Paris Imprint], hf. brown morocco neat, with bookplate of, and 



numerous MS. notes by, Henry B. H. Beaufoy, F.R.S., 10s 



This work was awarded the prize by the Marseilles Academy. The above copies contain three dissertations : ' Sur les 

 Moyens employes pour reaouveller unc Vigne ; Sur les Usages Economiques des differentes Parties de la Vigne ; Sur les 

 Vaisseaux propres a perfectionuer le V^in, et sur les Objets qui y ont Rapport'. 



14561 RUBIN (Try ggve) Le Roseau de la Base SuEDOiSEau Spitzbergen : These; with 2 folding 

 plates, 4to. (pp. 49), sewn, 2s Stockholm, 1903 



14562 RUOHONNET (Charles, de Lausanne) Exposition Geometrique des Proprietes Gene- 

 rales des Courbes, 4^ Edition ; with Q folding plates, 8vo. sewn, \s Qd 1880 



14563 RUCKER (Sir Arthur William, f.r.s.) On the Density and Composition of Dilute 

 Sulphuric Acid, No. II, Svo. (pp. 6), sewn, \s 1892 



14564 On the Relation between the Density and Composition of Dilute Sulphuric Acid, 



8vo. (pp. 10), sewn, Is 1891 



14565 Summary of the Results of the Recent Magnetic Survey of Gt. Britain and Ire- 

 land, conducted by Professors RiJCKERand Thorpe, with diagrams, roy. 8vo. (pp.42), sewn, 2s 1896 



14566 , and Sir Thomas Edward THORPE, f.r.s. : A Magnetic Survey of the British 



Isles for the Epoch January 1, 1886 (Bakerian Lecture), ivith 14: plates {2 folding), and 31 diagrams, 

 roy. 4to. hf roan (cracked), lOs 1889 



The third magnetic survey of Gt. Britain, being preceded by those of Sir Edward Sabine of 1834-8 and 1857-62. The 

 authors were awarded the Royal Society's Royal Medal for the above work. 



14567 RUDD (Capt. Thomas, Chief Engineer to his late 3Iajesty) Practical Geometry, shewing 

 how to perform the Four Species of ARiTHMETiCK(viz. Addition, Substraction, Multiplication, and 

 Division), with Reduction and the Rule of Proportion in Figures, and containing a Hundred 

 Geometricall Questions, with their Solutions and Demonstrations, some of them being per- 

 formed Arithmetically, and others Geometrically, yet all without the Help of Algebra, with 

 numerous diagrayns, 2 vols. sm. 4to. in 1, sound and clean copy in contemporary sheep {back and 

 one side rubbed) ; RARE, £1. Is Robert Leybourn, for Robert Boydell, 1650 



This work was unknown to Poggendorff and Prof, de Morgan. The author was the editor of an English edition of 

 Euclid's Elements (v. No. 1216 ante). 



14568 RUDIO (Ferdinand ; Ziirich) Ueber die Bewegung dreier Punkte in einer Geraden, 4to. 

 (pp. 6), seivn, Is 6d [Berlin, 1886] 



14569 RTJDORF (August Gottlieb) Abhandlung vom Oekonomischen Feldmessen, wie solches 

 vermittelst des Messtisches ohne Zuziehung irgend eines andern Winkel-Instruments . . . ver- 

 richtet werden kann, mit Anhang, wie man einzelne Flachen etc. durch Hilfe der Ketten und 

 Stiibe aufnehmen und in Grund legen kann, 2. Autlage ; ivith 17 folding plates, Svo. boards, 3s 6d 



Leipzig, 1813 



14570 RXTDZKI (Maurycy P.; Univ. Cracoiv) Ueber die Gestalt elastischer Wellen in 

 Gesteinen. IV. Studie aus der Theorie der Erdbeben ; tvith diagram, Svo. (pp. 12), sewn. Is 



[Krakau] , 1899 



14571 RUFF (Francis, c.e., Frankfort on the Maine) Reference Book for Statical Calcul- 

 ations (Rapid Statics): Force- Diagrams for Frameworks, Tables, Instructions for Statical 

 Calculations, etc., Vol. I, with folding chart and numerous diagrams, post Svo. cl., 2s 6d 

 (p. 4s nett) ' 1912 



' The first attempt to present the applications of statics to the constructions most frequently appearing in technical 

 work, in a comprehensive and easily graspable manner.'— Pre/ace. 



14572 RUFFINI (Paolo ; Univ. Modena) Sopra la Determinazione delle Radici nelle Equazioni 

 Numeriche di Qualunque Grado, impl. 4to. (?) Large Paper ; sewn, uncut [title stamped) ; 

 rare, 10s Qd Modena, 1804 



This work, which contains the author's method of finding the radicals of numerical equations of any degree, received 

 the prize of the Societa ItaUana. 



14573 Teoria Generale delle Equazioni, in cui si dimostra impossibile la Soluzione Alge- 



braica delle Equazioni Generali di Grado Superiore al Quarto ; with 2 folding tables, 2 vols. sq. Svo. 

 hf. morocco (rare), 16s Qd Bologna, 1799 



Important as iirst maintaining the impossibility of solving algebraic equations of the fifth or of a higher degree, the 

 proof of which was given by Abel in 1826. ' This theorem was the more important since it definitely limited a field of 

 mathematics which had previously attracted numerous writers.' — W. W. R. Ball. 



' Though inconclusive, Ruftini's demonstrations are remarkable as containing anticipations of Cauchy's theory of 

 groups.'— Pro/. Cajori. 



14574 RUFFNER (Col. Ernest Howard, U.S. Army) The Practice of the Improvement of the 

 Non-Tidal Rivers of the United States, with Examination of the Results thereof, folding 

 chart, roy. Svo. cl. [o. p.), 4s 6d New York, 1886 



14575 RUHLMAN (Christian Moritz ; Hannover) On Horizontal Water- Wheels, especially 

 Turbines or Whirl- Wheels ; their History, Construction, and Theory ; edited, with Introduc- 

 tion and Notes, by Sir Robert Kane, cr. 4to. (pp. 76), sewn {plates wanting), 3s Dublin, 1846 



14576 RUHMER (Ernst) Drahtlose Telephonie ; with 139 illustrations, impl. Svo. sewn, 3s Qd 

 (p. M. 6) Berli7i, 1907 



Containing an interesting history of wireless telephony. 



