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



2071 HYMERS (John, Rector of Brandesburton, F.R.s. ; founder of Hymers College, Hull] TREATISK 

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

 8vo. boards, 4s Qd Cambridge, 1845 



' This work at once became a standard textbook.' D. N. B. 



2072 - - TREATISE on DIFFERENTIAL EQUATIONS, and on the CALCULUS of FINITE DIFFERENCES, 

 plate, 8vo. boards, 3s ib., 1839 



2073 SECOND EDITION, enlarged, 8vo. cl., 4s 1858 



0074 - TREATISE on the INTEGRAL CALCULUS, with the Theory of Definite Integrals and of 



ELLIPTIC FUNCTIONS, 2nd Ed., enlarged, 2 plates, 8vo. boards, 3s Qd Cambridge, 1835 



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



2075 - - THIRD EDITION, enlarged, 2 plates, 8vo. boards, or, cl., 4s ib., 1844 



_ TREATISE on the THEORY of ALGEBRAICAL EQUATIONS, plate, 8vo. boards, 3s ib., 1837 

 _ SECOND EDITION, altered and enlarged, plate, 8vo. boards, 3s Qd ib., 1840 



TREATISE on TRIGONOMETRY, and on Trigonometrical Tables and Logarithms, with Select 

 Problems and their Solutions, 2nd Ed., enlarged: TREATISE on SPHERICAL TRIGONOMETY, 3 plates 

 2 vols. Svo. in 1, boards, 4s Qd ib., 1841 



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



2079 HYNDMAN (H. H. Francis) RADIATION : Electromagnetic Radiation, Rontgen and Cathode 



Rays ; with Preface by SILVANUS P. THOMPSON, F.R.S., diagrams, post Svo. cl., 3s (p. 6s) 1898 



2030 IBBETSON (John Holt) SPECIMENS in ECCENTRIC CIRCULAR TURNING, with Practical 



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



woodcuts, Svo. cl., 5s [c. 1830] 



2051 IDELER (Christian Ludwig) HANDBUCH der MATHEMATISCHEN und TECHNISCHEN CHRONO- 

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



THE SCARCE 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. 



2052 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, Svo. cl., 4s Qd (p. 7s Qd nett) 1900 



2083 INDUSTRIES (The) of the WORLD : a COMPLETE COURSE of TECHNICAL EDUCATION, ed. by 

 JAMES WYLDE, copiously illustrated with portraits, plates, and woodcuts, 2 vols. impl. 8vo. in 6 

 parts, cl. (out of print), 15s (p. 1. 19s) [1881-2] 



20S4 INGENHOUSZ (Jan, F.R.S.) EXPERIMENTS upon VEGETABLES, discovering their great Power of 

 purifying the Common Air in the Sunshine, and of injuring 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'Am DEPHLOGISTIQUE que les 

 VEGETAUX repandent dans 1'Atmosphere pendant le Jour, etc. etc., 4to. (pp. 14), sewn, 

 2s Qd [1785] 



20S6 - - LETTRE a M. N. C. MOLITOR au Sujet de I'EFFET particulier qu'ont sur la GERMINATION 



2087 



des Semences ... les differentes Especes d'AiR, 4to. (pp ; 12), sewn, 2s [1786] 



OBSERVATIONS PHYSIQUES : Reflexions sur 1'Economie des Vegetaux : 1'Origine et la 



Nature de la Matiere verte de M. PRIESTLEY ; with coloured plate, 4to. sewn, 4s 1784 



Ingenhousz, who spent his later years in England, was the first to employ glass plates in the construction of electric 

 machjnes. He also made important researches into the thermal conductivity of different metals, and was the h'rst to 

 introduce carbon dioxide into medical use. 



2088 INGLIS (James) ARTISTIC LIGHTING ; with ' AT HOME ' PORTRAITURE, with Daylight and 

 Flashlight, by F. DuNDAS TODD, 11 plates, chiefly portrait-specimens, post Svo. cl., 2s Qd (p. 5s) 



Chicago, 1897 



2089 INGRAM (Alexander) The PRINCIPLES of ARITHMETIC and their APPLICATION to BUSINESS, 

 26th Ed., 16mo. old sheep, 3s Qd 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 method 

 of cube mot (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, with Sandhurst College bookplate, 8s Qd 1849 



' In the third edition (1835) lie introduced a new trigonometrical function, the ha]f-versine, or haversine, the logarithms 

 of which were added to the Tables, and enormously simplified, 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.' SirJ. K. Laughton. 



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. sewn, 8s Qd 

 (p. 14s 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 I'ACADEMIE 

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



2093 - TOMES 52 ;i 65 ; 14 thick vols. 4to. hf. calf, 1. 5s (p. F. 210. unbound) 1861-7 



See MKMOIHK.S de MATHEMATIQUE et de PHYSIQUE, post. 



2094 INSTRUMENTS de PRECISION: MUSEE RETROSPECTIF de la Classe 15, a 1'Exposition 

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

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



A most valuable'col!ection of scientific instruments of historical interest. 



8 



