HENRY SOTHERAN & CO., 140, STRAND, W.C, AND 43, PICCADILLY, W. 83T 

 Mathematics, continued: — 



16719 THOMAE (Johannes ; Prof. Mathematics, Jena) Abriss einer Theorie der FUNCTIONEN 

 einer complexen Veranderlichen und der Thetafunctionen, 3. [letzte] erheblich vermehrte 

 Autiage: with plate and diagrams, 4to. red buckram, Is 6d (p. M. 10 sewn) Halle, 1890 



16720 Elementare Theorie der an alytischen Functionen einer complexen Verander- 

 lichen, 2. umgearbeitete Auflage ; urith diagrams, large 4to. bw.kram, uricut, t. e, g., Is (p. M. 9* 

 sewn) ibidem, 1898. 



16721 Die Kegelschnitte in rein PROJECTIVER Behandlung ; with IS folding plates {linen- 

 mounted), besides diagrams, 8vo. buckram, 4s (p. M. 6 sewn) ib., 1894* 



16722 THOMAN (Fedor, dti 'Credit Mobilier') Tables des Logarithmes a 27 D6ciM ales pour les- 

 Caleuls de Precision, roy. 8vo. cl. (SCARCE), 10* 6rf Imprimerie Imptriale, 186T 



' Le but de ces tables est de trouver par uu precede facile et simple, sans division, sans multiplication et sans formula- 

 le logarithme d'un noiubre donne ou le norabre correspondant i uu logarithme donn6.' — Introduction. 



16723 Theory of Compound Interest and Annuities, with Logarithmic Tables, 4th Edition, 



fcap. 8vo. boards, 2s 1891 



16724 TH-ORNTON {A. Q.J 7nanufacturer to Govt.) MATHEMATICAL DRAWING INSTRUMENTS and 

 Materials, etc., ivith plate and numerous illustrations, post 8vo. cl., 2s 6d [1906], 



16725 TISSERAND (Felix; deVInstitut) Recueil Complementaire d'ExKRCiCES surle Calcul. 

 INFINITESIMAL; 2'^ [derniere] j!idition, augment^e des nouveaiix Exercices siir le^ Va riables. 

 Iniaginaires, par P. Painleve ; with 83 diagrams, 8vo. hf. black calf neat, cl. sides {as g ood as 

 new), 6s (p. F. 9.00 nett sewn) 1896 



16726 TODHTJNTER (Isaac, St. John's Coll., Cantab.; f.r.s.) Algebra, with numerous Examples, 

 new Edition, with Key, 2 vols, post 8vo. hf. pigskin, 7s Qd (p. ISs in cl.) 1889-94 



16727 History of the Mathematical Theory of Probability, from the Time of Pascai* 



to that of Laplace, thick 8vo. cl., uncut (very scarce), £2. 15* Cambridge, 1865 



The only important history of the theory of probability extant, and like Dr. Todhunter's other historical wo rks, ot 

 great value also from a bibliographical point of view. 



16728 Plane Trigonometry, with numerous Examples, 6th Edition, with diagrams ; with 



Key, 2 vols. cr. 8vo. in 1, buckram, 65 (p. 15s 6d) 1876-93 



10729 New [final] Edition, revised by R. W. Hogg, with diagrams; with Key, 2 vols. cr. 



8vo. in 1, handsomely bound in half pigskin, cl. sides, 95 (p. 15s 60? in cl.) 189^-& 



16730 New Issue (without the Key), cr. 8vo. cl., 3s (p. 5s) 1905* 



1G731 Spherical Trigonometry [final Edition], revised by J. G. Leathem, with numerous: 



diagrams, cr. 8vo. cl., is (p. 7s 6d) 1901; 



16732 Treatise on the Differential Calculus, with numerous Examples, 6th [tinalj' 



Edition, with diagrams, post 8vo. cl., 4s 6d (p. 10s 60?) 1873: 



16733 New Edition [unaltered], loith diagrams ; Key by H. St. J. Hunter, with diag rams 



—2 vols, post 8vo. in 1, buckram, 10s Qd (p. £1. Is) 1907-1888. 



16734 Treatise on the Integral Calculus and its Applications, with numerous. Exam pies, 



4tli Edition, revised and enlarged, with diagrams, post 8vo. cl., 4s (p. 10s 6rf) 1874* 



16735 Final Edition [enlarged], with diagrams; with Key by H. St. J. Hunter, with 



diagrams, 2 vols, post 8vo. in 1, buckram, 10s 6d (p. £1. Is) 1895-89- 



16736 Treatise on Plane Co-ordinate Geometry as applied ti the Straight Line an* 



the Conic Sections, with numerous Examples ; 5th Edition, with diagrams, post 8vo. buc kram^ 

 3s (p. 7s 6rf) 1874 



16737 TOWNSEND (Richard; pr., F.R.S. , Prof. Natural Philosophy, T.C.D.) Chapters on the- 

 Modern Geometry of the Point, Line, and Circle, unth diagrams, 2 vols. Svo. in 1, cl., uncut, 

 10s 6d Dublin, 1863-5 



L6738 Another Copy, 2 vols, in \, hf. black morocco neat, cl. sides, t.e.g. (as good as new), \2s 



'A treatise of great importance in the history of pure geometry.'— D. N. B. 



L6739 TB.ESSE (A.), et A. THYBAULT : CoURSdeG^OM^TRlE Analytique; with 261 diagrams, 

 roy. Svo. (pp. 552), handsomely bound in hf. black morocco, cl. sides, uncut, t. e. g. {fine copy), 8s 6rf 

 (p. F. 12 nett sewn) 1904 



16740 TSCHEBYSCHEFF (Pafnutij Lvovitch ; Prof. Mathematics, Petrograd) Elemente der 

 Zahlentheorie (Theorie der Congruenzen), deutsch mit Autorisation des Verfassers 

 herausgegeben von Hermann Schapira ; neue Ausgabe, large post Svo. buckram, 3s 60? 



. , Berlin, 1902 



^8741 VACaXJANT (Charles), et A. MACE de LEPINAY: COURS de G^omiiITRIE El^mentaire,. 

 avec des Complements ; 7° Edition ; vnth numerous illustrations, Svo. (pp. 915), handsomely bound 

 in hf. black morocco, cl. sides {a^ good as new), 6s 6rf (p. F. 10 nett sewn) 1904 



16742 : Lecons d'ALCkBRE El^mentaire; 15® [derniere] Edition, avec Complement 



sur les Determinants ; unth diagrams, Svo. (pp. 789), handsomely bound in hf. bla^k morocco, cL 

 sides, 5s (p. F. 6 50 nett sewn) *. d, 



16743 Another Copy ; also : Compli^ments d'ALGfeBRE et Notions de G6om6trie An aly- 



tique, par A. Mace de Li^pinay, S^ [dernifere] i^dition ; with 224 diagrams, 2 vols. Svo. in 1, 

 handsomely bound in hf. pigskin, cl. sides, 8s (p. F. 11 nett sewn) *. d^ 



65 



