HENRY SOTHERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 827 



Mathematics, continued : — 



1(U91 PLUCKER (Julius; Univ. Bonn; f.r.s.) Neue Geometrie des Raumes ge<frundet auf die 



Betrachtung der geiaden Linie als Raumelement, mit Vorwort von A. Clebsch [heiausgegeben 



von Felix Klein] ; with aiafframs, 2 parts 4to. in 1, handsomely bound in hf. black morocco, cl. 



sides, t. e. g. {as good as new), lis (p. M. 15 sewn) Leipzig, 1868-9 



' By considering^ space as made up of lines he created ' a new geometry of space'- Regarding a right line as a curve 



involving four arbitrary parameters, one hus the whole system of lines in space. By connecting them by a single relation, 



he got a 'complex' of lines ; by connecting them with a twofold relation, a ' congrueucy' of lines'.— Pro/. Cajori. 



16492 POISSON (Simeon Denis, de VInstitut : f.r.s.) Recherches sur la Prorabilite des Juge- 

 ments en Matiere Criminelle et en MATliiRE Civile, pi6c6dees des Regies generales du 

 Calcul des Probabilites, 4to. hf. black calf neat, cl. sides, uncut, t. e.g. {as good as new), 8s 1837 



The author develops in this work Uis ' law of great number.s.' ' ' 



16493 PONCELET {QeneraX 3 esinVicior, de VInstitut ; F.R.S.) Applications d'ANALYSE et de" 

 trEOMETRiE, qui ont servi de principal Fondement au Traite des Propridtes projectives des 

 figures, avec Additions par MM. Mannheim et Moutard ; with folding tables and numerous 

 aia grams, 2 vols. 8vo. hf. maroon morocco neat, cl. sides {nice copy), 13.9 (p. F. 20 nett sewn) 1862-4 



16494 Traite des Proprietes Projectives des Figures, 2e [derniere] Edition, corrigee et 



augnientee d Annotations nouvelles ; with 18 folding plates {linen-mounted), 2 vols, large 4to. in 

 1, handsomely bound in hf. purple morocco neat, cl. sides, uncut, t. e. g. (fine COPY), £1. 7* 6rf 

 (p. F. 40 nett sewn) 1865-^ 



K,r«i^o"K ""^^'Li- f ^fst-known text-books on modern geometry. By means of projection, reciprocation, and homologous- 

 nj,ure3^e established all the chief properties of conies and quadrics. He also treated the theory of polygons.'^ 



' He investigated in it the property of figures which remain unaltered by projection, which is not effected here by 

 parallel rays of prescribed direction, as with Monge, but by centre projection. . ". . To him we owe the Law of Duality 

 a /-O'lsequeuce of reciprocal polars. '—P/o/. Ca]nr:. 

 The work was written in 1813 while the author whs a prisoner of war in Saratoff, with no other help than his memory. 



16495 PORTIER (B.) Le Carre Diabolique de 9 et son Derivd le Carre Satanique de 9 : he' 

 CARRE Cabalistique de 8—2 vols. roy. 8vo. in 1, cL, 3* Alger, 1902 



16496 POULAIN (Augusta, s.j.) Principes de la Nouvelle Geometrie du Triangle; with 

 diagrams, roy. 8vo. seivn, 2s 1S^2 



16197 PBACTICAL MATHEMATICS, new Edition, revised under the Supervision of C. G. 

 KNOi r, F.R.S.E., and J. S. Mackay, illustrated, thick cr. 8vo. buckram, 2s 6d 1903 



16498 PREDIGER (C, Bergakademie, Clausthal) Die Elemente der analytischen Geometrie 

 (les Kaumes, zum Gebrauche bei Vorlesungen und zum Selbststudium ; with 2Q folding plates {all 

 neatly hnen-mounted), 8vo. hf. black morocco neat, cl. sides, t. e.g. {fine copy), is td (p. M. 12 



i«ion^'''°^ , (^If^usthal, 1878 



16499 Another Copy, hf roan, 3* 



16500 PBICE (Bartholomew, pr., f.r.s.. Master of Pembroke Coll., Oxon.) Treatise on Infinit- 

 tsiMAL Calculus, 2nd [last] Edition [with many Additions], with folding plates, 4 thick vols. 

 8vo. cl., uncut (SCARCE), £2. 10* Univ. Press., Oxford, 1857-89 

 \'o~Tk ^N^'T^^^i^ Copy, 4 vols. hf. black morocco neat, cl. sides, uncut, t. e. g. (NICE COPy)» 



X'^. lOS 



A standard work on the subject, containing Differential and Integral Calculus, Calculus of Variations, Applications ta 

 Aigeora and Geometry, and Analytical Mechanics. Vols. 1 and 2 are out of print and scarce. 



16502 PBOCTOB. (Bichard Anthony, f.r.a.s.) Treatise on the Cycloid and all Forms oi 

 CYCLOID AL Curves, and on the Use of such Curves in dealing with the Motion of Planets, 

 Comets, etc., and of Matter projected from the Sun, ivlth 161 diagrams, post 8vo. cl. {o. p.), Ss 6d 

 (p. 10* 6d) Igyg 



16503 PRirvOST (E.), Lecons de Geometrie Analytique a I'Usage de la Classe des Mathematiques 

 speciales, 6e et 4e Editions ; with numerous diagrams, 2 vols. 8vo. hf black morocco neat, cl. sides 



_ (^«oe copy). Us (p. F. 21.50 nett sewn) s. d. 



^^^0* -— — . et D. PIERON: Lecons d'ALGEBRE (Tome I 2e Edition), 2 vols, thick 8vo. in 1, 



^ hj. black morocco neat, cl. sides, tie. g. {nice copy), ds (p. F. 15 nett sewn) s. o?.— 1898 



16505 PUCKLE (G. Hale, St. John's Coll., Cantab. ; Windermere Coll.) Elementary Treatise on 

 CONIC Sections and Algebraic Geometry, 4th Edition [revised, with a few Additions], with 

 diagrams, post 8vo. buckram {o. p.), Ss &d (p. 7s 6d) 1870 



16506 PITND (Otto) Algebra, mit Einschluss der elementaren Zahlentheorie, large cr. 8vo. 

 cl., or, buckram, Ss (p. M. 4.40) Leipzig, 1899 



16507, RAFFY (Louis, de la Sorbonne) Lecons sur les Applications Gi^ometriques de I'AnXlyse 



(Llements de la Theorie des Courbes et des Surfaces) ; with diagrams, roy. 8vo. buckram, uncut, 



_ f' e. g., 5s (p. F. 7.50 nett sewn) ' 1897 



16508 RAUSENBERGrER (Otto) Lehrbuch der Theorie der periodischen Functionen einer 

 V ariabeln mit endlicher Anzahl wesentlicher Discontinuitiitspunkte, nebst Einleitung in die 

 allgemeine Functionentheorie ; icith diagrams, 8vo. hf. cl., Qs (p. M. 10.80 sewn) Leipzig 1884 



16509 REID (Legh Wilber, Haverford Coll.) The Elements of the Theory of Algebraic Num- 

 bers, with Introduction by David Hilbert, Prof. Mathematics, Gottingen, 8vo. hf. black 

 morocco neat, cl. sides {as good as new). Us (p. 155 nett) New York, 1910 



* It has been my endeavor to lead by easy stages a reader, entirely unacquainted with the subject, to an appreciatioa 

 of some of the fundamental conceptions in the general theory of algebraic numbers.'— iV'/c.ce. 



