HENRY SOTHERAN & CO., 140, STRAND, W.C., and 37, PICCADILLY, W. 103 



2033 HUNT (Robert, f.k.js.) Researchks on Light : the Phenomena connected with the Chemical 

 and Molecular Chanfjes produced by the Influence of the Solar Rays, embracing- all the known 

 Photographic Processes, and New Discoveries in the Art, coloured front., and woodcuts, 

 8vo. cL, &? 6^ 1844 



* Another experimenter who tried to obtain the natural colours of objects by means of photography was Robert Hunt. 

 These researches took place between 1840 and 1843, and the result* were set forth in his work 'Researches on Light', 

 published in 1844.'—^. T. Story. 



2034 Second Edition [greatly enlarged], with folding front., and woodcuts, 8vo. cl., Hs 6d 1854 



' Mainly a history of photography ; but the 2nd edition (1854) contained a large number of original experiments and nejv 

 • analyses of the solar ray '.'— i>. N. B. 



203.") HUNT (Thomas Sterry, F.R.S.) Chemical and Geological Essays, Svg. cl. (scarce), lOs 6d 



Boston [Ma.ss.], 1875 

 Containing the author's researches on the composition of rocks ' which were of great importance.' He was the inventor 

 of the green ink with which ' greenbacks' are printed. 



2036 HUTTON (Charles, f.r.s.) The Compendious Measurer : a Brief, yet Comprehensive, 

 Treatise on Mensuration, and Practical Geometry, with Introduction to Arithmetic, woodcuts^ 

 12mo. sheep extra [fine copy), Qs 6d 1807 



2037 Course of Mathematics, for the Use of the Royal Military Academy, Woolwich, 8tli 



Ed., by Olinthus Grecjory, diagrams, 3 v., '24-20 : Key by Daniel Dowling, '20—4 vols. 8vo. 

 boards, 3s (id 1824-20 



2038 New Edition, wholly remodelled by William Ramsay, diagrams, thick 8vo. boards, 



2s 6d 1833 



2039 Twelfth Edition, continued and amended by Olinthus Gregorv, with considerable 



Additions by Thomas Stephens Davies, f.k.s., 2 v. cl. (stained), '41-3 : Key by T. S. Davies, 

 hf cl., '40—3 vols. 8vo. ivith diagrams ; %s 6rf 1841-3-0 



•j()40 : HiCKiK (James) Key to Rutherford's Edition of Button's Course of Mathematics, 



diagrams, 8vo cl., 2s Qd 1849 



2041 The DiARiAN Miscellany : Useful and Entertaining Parts, both Mathematical and 



Poetical, extracted from the Ladies' Diary, 1704-73, with many additional Solutions and 

 Improvements, illustrated, 5 vols. 12mo. old calf, \0s Qd 1775 



•J042 Mathematical Tables, with a large and ori^anal History of the Discoveries and 



Writings relating to those Subjects, etc. etc., first edition, roy. 8vo. new bvckram (corner cut off 

 title) ; rare, Vis (irf 1785 



2043 Fifth Edition, roy. 8vo. hf. calf, bs Qd 1811 



2044 Sixth Edition, large roy. 8vo. boards, uncut. Is 6c? 1822 



' With introtluction, still valued as an interesting an<l learned history of logarithmic work. Button deprecates the 

 theory of Napier's iq. v. post] originality as the inventor of logarithms. He suggested the plan of the great work on 

 logarithms which was afterwards compiled by his friend, Baron Maseros.' — D. N. B, 



2045 Mathematical and Philosophical Dictionary, with Historical Account and Mem- 

 oirs of Authors Ancient and Modern, first edition, unth plates, 2 vols. 4to. old hf. calf (binding 

 damaged), Qs 6d 1796 



■J()46 Second [last] Edition [enlarged], with 41 copperplates, and numerous diagrams, 2 vols. 



4to. old hf. calf, \2s Qd 1815 



2047 Another Copy, with portrait on copper (inserted), 2 vols. 4to. old tree-calf gilt, newly 



and neatly rebacked, \Qs Qd 



The <ir.st mathematical dictionary in Euglish.and still valuable for the biographical information it contains. 



2048 The Principles of Bridges : Mathematical Demonstrations of the Properties of Arches, 



the Thickness of Piers, etc. etc., 2nd Ed., with Additions, diagrams, 12mo. sewn, 4* 1801 



Written on the occasion of Newcastle Bridge being injured by a flooil. It'is valuable for establishing the nmthematical 

 principle of the law of arches, 



2049 Recreations in Mathematics and Natural Philosophy, first composed by M. 



Ozanam, lately recomposed by M. MoNTUCLA, and now trans., with many Additions and Observ- 

 ations, nearly 100 copperplates, 4 vols. 8vo. in 2, cl., 8s 6d 1814 



2050 Tracts on Mathematical and Philosophical Subjects, including the Theory of 



Bridges, and experiments on the Force of Gunpowder, with fine portrait by C. Turner, plates, 

 and diagrams, 3 vols. 8vo. contemporary tree-calf (fine copy), with bookplate of Charles 3rd Earl 

 Stanhope, F.E.S., 12s 6d 1812 



2051 Another Copy, 3 vols, boards, uncut, 9s 6d 



2052 Treatise on Mensuration, in Theory and Practice, with numerous diagrams by Thomas 



Bewick, thick 4to. old hf. calf gilt (fine copy), with Earl Stanhope's bookplate, 15* 



Newcastle-on-Tyne, 1770 

 The diagrams in this work are by Thomas Bewick, the celebrated wood-engraver, and form Ids first essay at 

 book illustration. 



2053 Fourth Edition, with many Additions, diagrams, thick 8vo. boards, uncut, 5s 1812 



Hutton, who became one of the foremost mathematicians of his time, and the value of who.se work in computing the 

 earth's density was acknowledge<l by Laplace, began life as a hewer in Long Benton Colliery near Newcastle-on-tyne. 

 ' All his books were of a professional and practical character, and are invariably clear and accurate.'— D. N. B. 



2054 HUTTON (James, m.d.) Dissertations on different Subjects in Natural Philosophy, 4to. old 

 c(df (fine tall copy), with bookplate of Philip 2nd Earl Stanhope, F.R.S. (rare), £\. \s Edin., 1792 



Containing the ' Meteorological Dissertations on Rain and Wind ', one of his most important works, wherein he ascribes 

 the formation of rain to the mingling of two strata of air of different temi)eraturcs and the subsequent condensation of the 

 ndxture ; also papers on phlogiston, and the laws of matter and motion. 



' Hutton ranks as the first great English geologist.' — D. N. B. 



2055 HUXLEY (Thomas Henry, f.r.s.) Physiography: an Introduction to the Study of Nature, 

 New Ed., 5 coloured plates, and 122 woodcuts, cr. Svo. cl., Zs (p. 6*) 1882 or '90 



