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



MATHEMATICS, continued : 



16511 REIDT (Friedrich) SAMMLUNG von AUFGABEN und BEISPIELEN aus der TRIGONOMETRIE 

 und STEREOMETRIE, mit den Auflb'sungen, 4. Auflage, neu bearbeitet von A. MUCH, 4 parts in 1 

 vol. 8vo. handsomely bound in hf. pigskin, cl. sides, 6s Qd (p. M. 9.80 sewn) Leipzig, 1894-7 



16512 ANOTHER COPY, 4 vols. Svo. in 1, handsomely bound in hf. black morocco, cl. sides (as 



good as new), 7s 



16513 VORSCHULE der THEORIE der DETERMINANTEN, Svo. cl. (scarce), 2s Qd ibidem, 1874 



16514 Rl^MOND (A.) EXERCICES ELEMENTAIRES de GEOMETRIE ANALYTIQUE a DEUX et TROIS 

 DIMENSIONS, avec Expose des Methodes de Resolution, 2e [derniere] Edition ; with numerous 

 diagrams, 2 vols. Svo. buckram, 9s (p. F. 14 nett sewn) 1891-8 



16515 RESAL (Ame Henri, de Vlnstitut) EXPOSITION de la THEORIE des SURFACES ; with diagrams, 

 Svo. hf. maroon morocco neat, cl. sides (nice copy), 4s 1891 



16516 REYE (Karl Theodor ; Univ. Strasbourg) Die GEOMETRIE der LAGE, 2. vermelirte Auflage ; 

 with 6 folding plates, 2 vols. large Svo. in 1, hf. calf, 5s (p. M. 12 sewn) Hannover, 1877-80 



16517 - DRITTE VERMEHRTE AUFLAGE; with numerous diagrams, 3 vols. large Svo. in 1, hf. 

 polished maroon morocco neat, cl. sides (fine copy), \2s Qd (p. M. 22 sewn) Leipzig, 1886-92 



16518 - NEUESTE VERBESSERTE UND VERMEHRTE AUFLAGE (Bd. 1 5. und Bd. II III 4. Auflage) ; 

 with 125 diagrams, 3 vols large Svo. in 1, handsomely bound in hf. pigskin, cl. sides, uncut, t. e. g. 

 (nice copy), 1. Is (p. M. 26 sewn) Stuttgart, 1907 Leipzig, 1910 



One of the best text-books on synthetic geometry. 



16519 RHEIMS ( J. F. H. de) FIRST PRACTICAL LINES in GEOMETRICAL DRAWING, with 68 plates, 

 8vo. cl. 3s (p. 9s) 1865 



16520 BICE (John Minot, Prof. Math., U.S.N.), and William Woolsey JOHNSON, U.S. Naval 

 Academy : ELEMENTARY TREATISE on the DIFFERENTIAL CALCULUS, founded on the Method of 

 Rates or Fluxions ; fourth Edition, with 80 diagrams, thick Svo. buckram, 8s (p. 18s) 1888 



Discarding Lagrange's method of derived functions as objectionable, the authors improved on Newton's conception of 

 rates and fluxions ' by deriving the differentials of the functions by an analytical method founded on the notion of rates, 

 and entirely independent of the difficult conceptions of infinitesimal increments and of limiting ratios . . . resulting in a 

 satisfactory method of obtaining the differentials of the simple functions ' (Preface). 



16521 RICHARD (Jules Antoine) LECONS sur les METHODES de la GEOMETRIE MODERNE, nouvelle 

 Edition, augmented ; with diagrams', large Svo. buckram, uncut, t. e. g. (o. p.), 6s 1900 



16522 RICHARD (P. J.), et mile PETIT, actuaires : THEORIE MATHEMATIQUE des ASSURANCES' 

 cr. Svo. buckram, 2s Qd . 1908 



16523, RICHTER (Otto) KREIS und KUGEL in SENKRECHTER PROJEKTION ; with 147 diagrams, Svo. 

 buckram, uncut, t. e. g., 3s Qd Leipzig, 1908 



16524 RIEMANN (Georg Friedrich Bernhard, Univ. Gottingen) GESAMMELETE MATHEMATISCHE 

 WERKE und wissenschaftlicher Nachlass, herausgegeben, unter Mitwirkung von R. DEDEKIND, 

 von HEINRICH WEBER ; 2. [neueste] Auflage [mit Lebenslauf] , bearbeitet von H. WEBER ; with 



Jine steel portrait and illustrations, large Svo. hf. maroon morocco neat, cl. sides (fine copy), 14s 

 (p. M. 18 sewn) Leipzig, 1892 



' Like all of Riemann's researches, those on functions were profound and far-reaching. He laid the fouudation for a 

 general theory of functions of a complex variable. The theory of potential, which up to that time had beeu used only 

 in mathematical physics, was applied by him to pure mathematics.' Prof. Cajori. The above contains also his celebrated 

 thesis, Grundlagen fiir eine allgemeine Theorie der Functionen einer veranderlichen complexen Grosse, ' which excited the 

 admiration of Gauss to a very unusual degree ', and his famous memoir on the hypotheses on which geometry is founded. 



16525 PARTIELLE DIFFERENTIALGLEICHUNGEN und deren Anwendung auf physikalische 



Fragen, bearbeitet und herausgegeben von KARL HATTENDORF ; 3. Ausgabe ; with 46 diagrams, 

 Svo. red buckram, 4s Qd (p. M. 8 sewn) Braunschweig, 1882 



16526 - VIERTE AUFLAGE, neu bearbeitet von HEINRICH WEBER ; with numerous diagrams, 

 2 vols. Svo. in 1, handsomely bound inhf. black morocco, cl. sides, uncut, t. e. g. (fine copy), 13s Qd 

 (p. M. 20 sewn) ibidem, 1900-1 



16527 RiaUIER (Charles Edmond Alfred, Univ. Caen) Les SYSTEMES d'EQUATiONS aux 

 DERIVEES PARTIELLES ; with diagrams, roy. Svo. handsomely bound in hf. pigskin, cl. sides, 

 uncut, t. e. g., 14s (p. F. 20 nett sewn) 1901 



16528 RITT (Georges, Inspecteur general de instruction publique) PROBLEMES d'ALGEBRE et 

 EXERCICES de CALCUL ALGEBRIQUE, avec les Solutions, 4^ Edition, Svo. hf. calf, 3s 1S56 



16529 PROBLEMES d' APPLICATION de I'ALGEBRE a la GEOMETRIE, avec les Solutions 



developpdes ; 2e Edition ; with 7 folding plates, Svo. buckram (o.p.), 3s 1857 



16530 PROBLEMES de GEOMETRIE et de TRIGONOMETRIE, avec la Methode a suivre pour la 



Resolution des Problemes de Geometric et les Solutions, 6 e [derniere] Edition ; with Q folding 

 plates (linen-mounted), Svo. buckram (o. p.), 3s Qd 1873 



,16531 PROBLEMES de GEOMETRIE ANALYTIQUE, avec les Solutions developpe"es, 2e Edition ; 



with 9 plates, Svo. cl., 3s 1859 



16532 ROBERTS (Ralph Augustus, T.C.D.) TREATISE on the INTEGRAL CALCULUS, PART I (all 

 pub.) : Elementary Account of ELLIPTIC INTEGRALS and APPLICATIONS to PLANE CURVES, with 

 34 diagrams, post Svo. buckram, uncut, t. e. g. (o.p.), 4s Qd (p. 10s Qd) Dublin, 1887 



