HENRY SOTHERAN & CO., 140, STRAND, W.C., and 37, PICCADILLY, W. 105 



2071 HYMERS (John, Rector of Brandesburton, F.R.S. ; founder of Hymcrs College, Hull) Treatisp: 

 on Conic Skctions, and the Application of Algebra to Geometry, 3rd Ed., enlarged, 4 plates, 

 8vo. boards, 4^ Qd Cambridge, 1845 



' Tliis work at onco became a standard textbook.'—/). N. B. 



2072 Treatise on Differential Equations, and on the Calculus of Finite Differences, 



plate, 8vo. boards, 3a- ib., 1839 



2073 Second Edition, enlarged, 8vo. cl., 4* 1858 



2074 Treatise on the Integral Calculus, with the Theory of Definite Integrals and of 



Elliptic Functions, 2nd Ed., enlarged, 2 plates, 8vo. boards, 3* 6rf Cambridge, 1835 



'The second edition (1835) introduced the subject of ' Elliptic Functions' to English students.*—!). N. B. 



2075 Third Edition, enlarged, 2 plates, 8vo. boards, or, cL, As ib., 1844 



2076 Treatise on the Theory of Algebraical Equations, plate, 8vo. boards, Ss ib., 1837 



2077 Second Edition, altered and enlarged, plate, 8vo. boards, 3s 6d ib., 1840 



2078 Treatise on Trigonometry, and on Trigonometrical Tables and Logarithms, with Select 



Problems and their Solutions, 2nd Ed., enlarged : TREATISE on SPHERICAL Trigonomety, S plates— 

 2 vols. 8vo. in 1, boards, 4s 6d ib., 1841 



' His books exhibit much acquaintance with the progress of mathematics on the continent.' — D. N. B. 



2070 HYNDMAN (H. H. Francis) Radiation : Electromagnetic Radiation, Rontgen and Cathode 

 Rays ; with Preface by Silvanus P. Thompson, f.r.s., diagrams, post 8vo. cl., lis (p. 6s) 1898 



2080 IBBETSON (John Holt) Specimens in Eccentric Circular Turning, with Practical 

 Instructions, third Ed., with considerable Additions, copperplates {some folding), and numerous 

 woodcuts, 8vo. cl., 5s [c. 1830] 



2081 IDELES. (Christian Ludwig) Handbuch der mathematischen und technischen Chrono- 

 logie, aus den Quellen bearbeitet, 2 thick vols. Svo. boards, £1. 10s Berlin, 1825-6 



The scarck original edition of the author's most important work. ' An exhaustive and commendable work on 

 the measures of time adopted in various countries, especially in ancient times,' — Prof. S. Newcomb. 



2082 ILES (George, New York) Flame, Electricity, and the Camera : Man's Progress from the 

 First Kindling of Fire to the Wireless Telegraph and the Photography of Color, with 22 portraits 

 and plates, and 93 cuts, 8vo. cl., 4s 6d (p. 7* 6rf nett) 1900 



20S3 INDCrsTRIES (The) of the World : a Complete Course of Technical Education, ed. by 

 James Wvlde, copiotish/ illustrated tvith portraits, plates, and woodcuts, 2 vols. impl. 8vo. in 6 

 parts, rl. {out of print), 15? (p. £L 19*) [1881-2] 



2084 INGENHOUSZ (Jan, f.r.s. ) Experiments upon Vegetables, discovering their great Power of 

 purifying the Common Air in the Sunshine, and of injurin;^ it in the Shade and at Night, with 

 a new Method of examining the accurate Degree of Salubrity of the Atmosphere, folding plate, 

 Svo. old calf (rare), £1. 5s 1779 



The author's chief work, containing his discovery that plants give off oxygen in the sunshine, and carbon dioxide in 

 the shade. 



2085 Lettre a M. J. VAN Breda au Sujet de la Quantite d'AiR Dephlogistiqu6 que les 



Vj^g^tAUX rdpandent dans I'Atmosphbre pendant le Jour, etc. etc., 4to. (pp. 14), sewn, 

 2s Qd [1785] 



20SC Lettre h M. N. C. Molitor au Sujet de I'Effet particulier qu'ont sur la Germination 



des Semences . . . les difFc^'rentes Espcices d'AiR, 4to. (pp. 12), fiewn, 2s [1786] 



•_> >s7 Observations Physiques : R6flexions sur I'Economie des Vdg6taux : I'Origine et la 



Nature de la Matibre verte de M. Priestley ; tvith coloured plate, 4to. sewn, 4s 1784 



Ingeuhousz, wlio spent his later years in England, was the first to employ glass ]>lates in the construction of electric 

 machines. He also made important researches into the thermal conductivity of different metals, and was the lirst to 

 iut:o(luce carbon dioxide into medical use. 



ss INGLIS (James) Artistic Lighting ; with ♦ At Home ' Portraiture, with Daylight and 

 Flashligiit, by F. DuNDAS TODD, 11 plates, chieflg portrait-specimens, post Svo. cl., 2s Gd (p. 5s) 



Chicago, 1897 



2089 INGRAM (Alexander) The Principles of Arithmetic and their Application to Business, 

 26th Ed., 16mo. old sheep, 3s 6d Edin., 1847 



A M.S. note on title by a former owner states that the author was the first to bring out ' the present improved metho<l 

 of cmIh- root (p. 104).' 



2090 INMAN (James, d.d., Prof Navigation, R.N.C., Greenwich) Navigation and Nautical 

 Astronomy, 7th Ed., with Nautical Tables, for the Use of British Seamen, new Ed., 2 vols. 

 roy. Svo. hf. calf, tvith Sandhurst College bookplate, Hs 6d 1849 



' In the third edition (1S.3.'»; he introduced a new trigonometrical function, the half-versine, or haversine, the logarithms 

 of which were added to the Tables, and enonnously simplitied the practical solution of spherical triangles. After long 

 remaining the recognised textbook in the navy, the ' Navigation ' has been gradually superseded, but the tables still 

 continue in use.'— Sir J. K. Ixivghton. 



2091 INNES (Robert T. A., f.r.a.s. ; Govt. Observ., Johannesburg) Reference Catalogue of 

 Southern Double Stars, with Preface by Sir David Gill, f.r.s., impl. 4to. setcn, 8s 6d 

 (p. 145 nett) Edin., 1899 



' Up to the present time no general catalogue of the double stars of the Southern Hemisphere has been published. The 

 observer in this field has been compelled either to expend much time in searching ... or to consult and compare many 

 different publications."— .Sir David Gill. 



2092 INSTITUT de FRANCE : Comptes Rendus Hebdomadaires des Stances de 1'Academie 

 des Sciences ; Vols. 76-139, 64 vols. 4to. sewn as issued, £12. 12* (p. £38. 10* nett) 1873-1904 



2003 Tomes 52 a 05 ; 14 thick vols. 4to. hf calf, £1. 5s (p. F. 210. unbound) 1861-7 



See Mkmoires de Mathematique et de Physique, jwst. 

 2091 INSTRUMENTS de PR^ICISION: Mus^E R^trospectif de la Classe 15, h I'Exposition 

 de Paris, 1900 ; with 9 plates containing 81 portraits of Scientists, besides numerous fine engravings 

 of historical and modern scientific instruments, impl. Svo. sewn, 4s [1900] 



A most valuable collection of scientific instruments of historical interest. 



8 



