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



Mathematics, continued .— 



15919 DAVIS (Ellery Williams, Univ. Nebraska) Introduction to the Logic of Algebra, with 

 ilhistrative Exercises ; 2nd Edition, enlarged, 8vo. cl. (o. p.), Is 6d New York, 1894 



15920 DAVISON (Cheirles) Subjects for Mathematical Essays, tvUh diagrams, cr. Svo. cL, 2s 1915 



15921 DEDEKIND (Richard ; Technische Hochschule, Braunschweig) Essays on the Theory of 

 Numbers. 1. Continuity and Irrational Numbers. 11. The Nature and Meaning of Numbers : 

 authorized Translation by Wooster Woodruff Beman, cr. Svo. c/., 2s Qd Chicago, 1901 or 1909 



15922 Was sind und was sollen die Zahlen ? 3. Autiage, post Svo. buckram, t. e. g., 2s 



Braunschweig, 1911 



15923 DELAISTBE (Louis) COURS Complet de Dessin Lineaire gradue et progressif , 5^ Edition; 

 with 60 fi7ie plates, oblong folio, cL, Is 6d (p. F. 15 nett) 1894 



15924 DELASSUS (:fetienne ; Univ. Bordeaux) Lecons sur la Theorie Analytique des Equations 

 aux Derivees partielles du l^i- Ordre : VOGT (H.) Lecons sur la Resolution Algebrique des 

 i^QUATiONS, avec Preface de Jules Tannery— 2 vols.' large Svo. in 1, hf. roan, 5s 6d (p. F. 9.50 

 nett sewn) 1897-5 



15925 DEMARTRES (L6on ; Univ. Lille) Cours d' Analyse, redige par E. Lemaire ; neatly 

 autographed on 516 pp., with diagrams, 3 vols. 4to. in 1, neiv hf. black morocco neat, cl. sides {fine 

 copy) ; scarce, \Ss 1892-6 



CoNTENu :— I. Fonctions de Variables reelles : II. Proprietes des Fonctions analytiques : III. Equations differentielles 

 et aux Derivees partielles. 



15926 DESBOVES (Adolphe) Questions d'ALGiiBRE Elementaire : M^thodes et Solutions, avec 

 Expose des principales Theories et de norabreux Exercices proposes ; 4^ Edition, refondue et 

 augmentee ; loith 2 plates, Svo. hf. maroon morocco {nice copy), 5s 1892 



15927 Another Copy, buckram, 4s 



15928 Questions de Geometrie :^lementaire : M^thpdes et Solutions, avec Expose des 



principales Thc^ories et de norabreux Exercices proposes; 2^ Edition, refondue et augmentee ; ivith 

 12 plates, Svo. hf. roan {scarce), 5s 1875 



15929 Questions de Geometrie : Methodes et Solutions, avec Expose des principales Theories 



et Notes sur les Rapports entre I'Algebre et la Geometrie ; ivith 11 folding plates, Svo. hf. French 

 morocco neat {nice copy) ; scarce, 5s 1870 



15930 Questions de Trigonometrie : Methodes et Solutions, avec plus de 400 Exercices 



proposes ; with 4 plates, Svo. hf. rnaroon morocco, 3* (p. F. 5 nett sewn) 1872 



15931 Troisieme Edition, revue et corrigee ; ivith 4 folding plates {linen-mounted) ; avec les 



Solutions, 2 vols. Svo. in 1, handsomely bound in hf. black morocco, cl. sides {fine copy). Is 1884-77 



15932 Solutions des Exercices proposes dans les Questions de Trigonometrie Rectiligne, 



precedees d'un Recueil des principales Formules, Svo. buckram, Zs 1877 



15933 DETTE (W.) Analytische Geometrie der Kegelschnitte ; with 45 diagrams, Svo. cl., 3* 

 (p. M. 4.40) ' Leipzig, 1909 



15934 DICKSON (Leonard Eugene, Univ. Chicago) Algebraic Invariants, large Svo. cL, 3s Qd 

 (p. 5s Qd nett) New York, 1914 



15935 Introduction to the Theory of Algebraic Equations, large post Svo. buckram, Zs 



(p. 5s M nett) ibidem, 1903 



15936 DINGELDEY (Friedrich ; Technische Hochschule, Darm.<}tadt) Uber die Erzeugung von 

 Curven 4. Ordnung durch Bewegungsmechanismen : Inaugural- Dissertation ; with 6 folding 

 plates, large Svo. sewn {o. p.), 2s 6d Leipzig, 1885 



15937 Sammlung von Aufgaben zur AN^VENDUNG der Differential- und Integralrech- 



NUNG ; with 195 diagrams,- 2 vols, large Svo. cl., 13s 6c? (p. M. 20) ibidem, 1910-13 



15935 DINI (Ulisse, Univ. Pisa) Grundlagen fUr eine Theorie der Functionen einer veran- 

 DERLiCHEN REELLEN Grosse, deutsch bearbeitet von Jacob Luroth and Adolf Schepp, Svo. 

 hf. 7naroon morocco neat, cl. sides {fine copy), 9s ^d (p. M. 12 sewn) Leipzig, 1892 



DIRICHLET (Peter Gustav Lejeune)— z;. Lejeune-Dirichlet, post. 



15939 DIXON (Alfred Cardew) The Elementary Properties of the Elliptic Functions, with 

 Examples, ivith diagrams, post Svo. buckram, 3s (p. 5s) 1894 



15940 DODGSON (Charles (Lutwidge, deacofi ; ' Lewis Carroll', author of ' Alice in Wonder- 

 land') CuRiosA Mathematica : I. A New Theory of Parallels: II. Pillow Problems, 

 thought out during wakeful Hours, luith diagrams, 2 vols, post Svo. original cloth {scarce), 

 10s Qd 1S95 



15941 Elementary Treatise on Determinants, with their Application to Simultaneous 



Linear Equations and Algebraical Geometry, cr. 4to. cl., with inscr. * From the Author ' 

 (scarce), £1. Is 1867 



' Presenting the subject as a continuous chain of argument, separated from all accessories of explanation or illustration, 

 a form which I venture to think better suited for a treatise on exact science than the semi-coIIoquial semi-logical form 

 often adopted by mathematical writers.' — Preface. 



These were some of the mathematical books which were supplied to Queen Victoria when she ordered the other works 

 of the author of Alice in Wonderland. 



15942 DOEHLEMANN (Karl ; Munich) Geometrische TraNSFORMATIONEN ; with 189 illus- 

 trations, 2 vols, large cr. Svo. cl., 12s Qd (p. M. 20) Leipzig, 1902-S 



