lOG HENRY SOTHERAN c^- CO., 140, STRAND, W.C, and 37, PICCADILLY, ^V. 



2095 INTEGRAL CALCULUS, Collection of Examples on the, in which every Operation of each 

 Example is completely ell'ected, hy a Member of the University [with Table of Integrals], 8vo. 

 boards, 36' Qd Cambridge, 1835 



2096 INTELLECTUAL OBSERVEB, (The) : Rkview of Natural History, Microscopic 

 Research, and Recreative Science, with numerous plates {many coloured), and woodcuts, 

 12 vols. Svo. /?/. calf extra {fine set), £1. 155 1862-8 



2097 Another Copy, 12 v. 8vo. ; with, its Continuation : The Student and Intellectual 



Observer, icith mimerous coloured and other plates, and ivoodcuts, complete in 5 vols. roy. Svo. 

 —in all 17 vols. hf. calf antique, t. e. g. {fine set), £3. 3* 1862-71 



2098 Vols. t-III only, with plates {mamj coloured) and vjoodcuts, 3 vols. Svo. hf. roan, 



6s &d 1862-3 



2099 IRON and STEEL INSTITUTE, Publications of the, from the beginning in 1869 to 1905, 

 No. 1 ; viz. : Transactions, 2 v. in 1, Newcastle-on-Tyne, 1869-70 {wanting v. II, No. 2) : Journal, 

 1871-1905, No. 1, 1871-1905 {ivanting 1871, No. 1) ; Name Index, V. 1-50 (1869-96), '98 : General 

 Index, V. 36-58 (1890-1900), 1902 : 'Special Volume (The Iron and Steel Institute in America in 

 1890), n. d.: Library Catalogue, loith very numerous plates, portraits, etc. — in all 5 vols. hf. 

 calf gilt, 56 vols, cl., and 4 parts, sewn (very scarce), £18. 18s 1869-1905 



2100 , Journal of the, from 1876 to 1905, No. 1, 9 parts and 49 v. : Indexes 



1869-1900, 2 v. : Special Volume (the Institute in America), 1890-1, 1 v.— in all 52 vols. Svo. cl., 

 and 9 parts, sewn ; with numerous plates, etc. (fresh series), £10. 10s (p. £50. Ss) 1876-1905 



One of the earliest and most important publications on the metallurgy of iron, containing valuable original contributions 

 by the leading 7netallurgist,s of the time. The second Index Volume contains a ' History of the Development of the 

 Institute' by Bennett H. Brough, with 16 portraits of iiast-prefiidents. 



2101 ISENTHAL (A. W.),andH. Snowden WARD: Practical Radiography : a Handbook for 

 Physicians, Surgeons, and other Users of X-Rays, third [last] Ed. [greatly enlarged], with 

 numerous plates and woodcuts, Svo. cl., Ss 6d (p. 6s nett) 1901 



2102 ISTITTJTO CHIMICO : Ricerche eseguite nell' Anno scolastieo 1890-1; ivith plate and 

 diagrams, roy. Svo. seum, with inscr. to Frof A. W. Williamson, F.R.S., 2s 6d Boma, 1891 



2103 [J. (S. B.)]'Cyclometry and Circle-Squaring in a Nutshell, by a Member of the British 

 Association for the Advancement of Science, diagrams, Svo. (pp. 44), sewn, 35 1871 



Originating in an attempt to 'draw' Professor Clifford. 



2104 JACK (Richard, Teacher of Mathematics, iiVm.) Elements of CONic Sections, demonstrating 

 the principal Properties of the Parabola, Ellipse, and Hyperbola, with numerous folding plates 

 (a few torn), Svo. old calf (j-are), Qs Qd Edin., 1742 



2105 Mathematical Principles of Theology, or the Existence of God Geometrically 



Demonstrated, Svo. nice copy in old calf, with bookplate of Philip 2nd Earl Stanhope, F.R.S. 

 {rare), lOs 6d 1747 



' Propositions arranged after the manner of Euclid, with beings represented by circles and square.'!. But these circles 

 and squares are logical symbols, not geometrical ones . . . It is a logical vagary.' — Prof, de Morgan. 



2106 JACKSON (Lowis d'Aguilar) Accented Four-Figure Logarithms, and other Tables, 8vo. 

 cl., 4s Qd {p. 9s) 1881 



2107 Statistics of Hydraulic Works and Hydrology of England, Canada, Egypt, and 



India, large Svo. cl. {out of print), 8s 6^ (p. £1. lis 6c?) 18S5 



2108 JACKSON (S., Victoria Coll., Congleton) Commercial Arithmetic, with Answers, cr. Svo. cl., 

 2s 1899 



2109 JACKSON (Thomas, Prof. Natural Philosophy, St. Andrews) Elements of Theoretical 

 Mechanics; luith \2 folding plates containing 200 diagrams, Svo. calf {scarce) , 6s Edin., 1827 



An early troatiso on mechanics treated on a purely mathematical basis. 



2110 JACOB (William Stephen; Madras Observatory) Double Stars observed at Poonah, 1S45-6, 

 4to. (pp. 12), sewn, 2s 1846 



2111 JACOBI (Karl Gustav Jakob) Fundamenta Nova Theoriae Functionum Ellipticarum ; 



u-ith folding table, 4to. hf cl., or, hf. bound, Ss Qd Ilegiomonti [Konigsberg i. P.], 1829 



' Jacobi's most celebrated 'investigations are tho.se on elliptic functions, the modern notation in which is substantially 

 due to him, and the theory of which he established simultaneously with Abel but quite independently of him. Jacobi's 

 results are given in his treatise on elliptic functions, published in 1829 . . .'— JT. IF. It. Ball. 



2112 JACOBY (Harold, Columbia Univ., N. Y.) Tables for the Correction of Micrometric 

 Measures for Kefraction, 1890 (Cape Observatory), folio (pp. 7), sewn, 2s [c. 1890] 



2113 JACdTJIER (Francois, Ord. Min. ; editor of Newton's Principia) Elementi di Perspettiva 

 secondo li Piincipii di Brook Taylor, con varie Aggiunte si)ettanti all' Ottica e alia Geometria ; 

 with \9 plates, Svo. old calf gilt {fine copy), icith bookylate of Charles 3rd Earl Stanhope, F.B.S., 

 6s 6d Roma, 1755 



2114 JAGO (William, Analytical Chemist) The Chemistry of Wheat, Flour, and Bread; and 

 Technology of Breadmaking, with numerous woodcuts, Svo. cl., 6s apud auctorem, Brighton, 1886 



2115 JAHRBUCH der Chemie : Bericht Uber die wichtigsten Fortschritte der reinen und ange- 

 wandten Chemie, herausgegeben von Richard Meyer, I.-VI. Jaiircang ; with numerous illus- 

 trations, 6 vols. roy. Svo. cl., £1. 10s (p. M. 84.) Frankfurt a. M., 1891— Brataischweig, 1896 



2116 (Technisch-Chemisches) : ein Bericht iiber die Fortschritte auf dem Gebiete der 



chemischen Technologic, hrsg. v. KuDOLF Biedermann, Jahrgang VI u. VIII (ISSf. 188^); illus- 

 trated, 2 vols. Svo. cl., 5s (p. M. 26 ) Berli7i, 1885-7 



2117 JALLABERT (Jean) Theses Physico-Mathematic^ de Gravitate, in quibus ejus Leges 

 ex Motibus Crele.stibus deducuntur, ac circa ejus Causam Mechanicam Hypothesis Eruditorum 

 examini subjicitur, 4to. (pp. 27), seivn {rare), 6s 6d Genevce, 1731 



This thesis, the author's first printed work, was unknown to Poggendorff and to his Biographer in PAogr. Gen., and was 

 defended before Gabriel Cramer, whom he succeeded as professor of mathematics at Geneva. 



