§40 HENRY SOTIIERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 



Mathematics, continued: — 



16796 "WILSON (Victor Tyson, Mich. Agricultural Coll.) Descriptive Geometry : a Treatise 

 from a Mathematical Standpoint, with Exercises and Practical Applications, with 149 diagrams, 

 large 8vo. huckram, 45 (p. 65 Qd nett) New York, 1909 



16797 WILSON (W. N., Rugby School) Geometrical Drawing, with numerous diagrams, 2 vols, 

 post 8vo. cL, 45 Qd (p. 95) 1903 



16798 WITHERS (John William) Euclid's Parallel Postulate: its Nature, Validity, and 

 Place in Geometrical Systems, cr. 8vo. cl., 45 (p. 65 M nett) Chicago, 1905 



16799 WOLSTENHOLME (Joseph, Math. Prof., Cooper's Hill) Mathematical Problems on 

 Subjects for the Cambridge Mathematical Tripos Examination, 3rd [last] Edition, revised and 

 corrected, 8vo. cl., \Os%d (p. I85) 1891 



' His fame rests chiefly on the wonderful series of original mathematical problems which he constructed upon prac- 

 tically all the subjects that entered into the course of training of students. They form a curious and almost unique 

 monument of ability and industry.'—/^. R. Forsyth, F.R.S. 



16800 WOODWARD (Robert Sijnpson, Pres., Carnegie Inst., Washington) Probability and 

 Theory of Errors, unth diagrams, 8vo. cl., 3s (p. 45 Qd nett) New York, 1906 



16801 WOOLHOUSE (Wesley S. B., f.r.a.s.) Elements of the Differential Calculus; 6th 

 Edition, '74 : Rudimentary Treatise on the Integral Calculus, by Homersham Cox, 

 '52: Examples of the Integral Calculus, by James Hann, '50—3 vols. fcap. 8vo. in 1, 

 buckram, 3s 6d 1850-74 



16802 WORMS de ROMILLY (P.) Sur les Premiers Principes des Sciences Mathi&matiques, 

 roy. 8vo. buckram, t. e. g., 2s 1908 



16803 WRIGHT (R. H., pr., Trinity Coll., Cantab.) COLLECTION of Problems and Theorems, 

 with Hints, Results, and occasional Solutions, forming Examples in the Methods of Modern 

 Geometry, especially Trilinear Coordinates, tvith diagrams, fcap. 8vo. cl., 3s Qd 1865 



16804 WRIGLEY (Alfred, pr. ; Prof. Mathematics, Addiscombe ; F.R.A.s.) Collection of 

 Examples and Problems in Pure and Mixed Mathematics, with Answers and Occasional 

 Hints, 10th [last] Edition, with the Key, with 4 plates (lineti-mounted), and diagrams, 2 vols. 

 8vo. in 1, hf black morocco gilt, cl. sides {as good as new), 7s 6d (p. 195 in cl.) Cambridge, 1889-8 



16805 WRONSKI (Hoene de, Officier d'Artillerie russe) Introduction a la Philosophie des 

 Mathematiques, et Teciinie d'ALGORlTHMiE, 4to. hf. purple calf neat (nice copy)j with auto, 

 and MS. notes of Prince Salm, and some pp. undei^lined (VERY SCARCE), £1. 155 1811 



Dedicated to the Tsar Alexander the First. 



' Novateur en religion, en politique et en mathematiques, il se disait a la fois le Messie et le Newton des temps 

 nouveaux, et annongait la creation d'une theorie definitive des nombres, de la solution d'une theorie de la matifere dans 

 ses trois et&ts.'—Biogr. Gen. 



16806 XAVIER (Agliberto) Theorie des Approximations Numi&riques et du Calcul 

 Abrege ; tvith diagrams, 8vo. hf. black morocco neat, cl. sides, t. e. g. (as good as new), 7s 

 (p. F. 10 nett sewn) 1909 



16807 YOUNG (William Henry, f.r.s. ; Univ. Liverpool) The Fundamental Theorems of the 

 Differential Calculus, 8vo. seivn, 2s Univ. Press, Cambridge, 1910 



16808 , and Grace OHISHOLM, Girton Coll. : The Theory of Sets of Points [with Biblio- 

 graphy (pp. 14)] , 8vo. hf. black morocco neat, cl. sides, t. e. g. [as good as new), 95 (p. 125 nett) 



apud eandem, ibidem, 1906 

 ' An attempt at a simple representation of one of the most recent branches of mathematical science.'— Pre/ace. 



16809 ZEUNER (Gustav Anton, Polytechnikum, Zurich) Abhandlungen aus der mathema- 

 TISCHEN Statistik ; with 27 illustrations, large 8vo. hf. brown morocco neat, uncut, t. e. g. {nice 

 copy), 5s (p. M. 7 sewn) Leipzig, 1869 



16810 ZINDLER (Konrad, Univ. Innsbruck) Liniengeometrie mit Anwendungen ; with 111 

 diagrams, 2 vols, large cr. 8vo. cl., 12s 66^ (p. M. 20) Leipzig, 1902-6 



16811 ZORETTI (Ludovic, Univ. Caen) Lecons de Mathematiques Generales, avec Preface de 

 Paul Appell ; with 206 diagrams, 8vo.' (pp. 769), hf. black morocco neat, cl. sides {fine copy), 

 135 U (p. F. 20 nett in cl.) 1914 



16812 Lecons sur le Prolongement Analytique, large 8vo. buckram, t. e. g., 3s 1911 



ASTRONOMY and GEODESY; 



16813 ADAMS (John Couch, f.r.s. ; discoverer of Neptune) Lectures on the Lunar Theory, 

 edited by Ralph Allen Sampson, f.r.s., cr. 8vo. cl., 2s M (p. 55) Univ. Press, Cambridge, 1900 



16814 AIRY (Sir George Biddell, f.r.s.. Astronomer Royal) Gravitation : an Elementary Ex- 

 planation of the principal Perturbations of the Solar System, 2nd [latest] Edition, with 50 

 diagrams, post 8vo. cl. {o. p.), 5s 1884 



First published in 1834. 



16815 ALLIATJME (Maurice ; Belgian Navy) Elements d'ASTRONOMiE ; with diagrams, 8vo. 

 buckram, uncut, t. e. g., 3s Qd LoirvAiN, 1913 



