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



4038 ROBERTSON (C, m.d.) Is the Eaeth a Planet? a Study in Physical and Mathematical 

 Geography, diagrams, 8vo. boards, 3s Qd Edin., 1897 



A latter-day defence of the Ptolemaic system, the result of vertical solar rays during a long residence in India. 



4039 ROBERTSON (Frederick Duncan Struan, f.c.s.) Practical Agricultural Chemistry, 

 with 41 illustrations, large post 8vo. cl., 5s (sells 75 Qd nett) 1907 



4040 ROBERTSON (Henry, m.d.) General View of the Natural History of the Atmosphere, 

 and of its Connexion with the Sciences of Medicine and Agriculture, including an Essay on the 

 Causes of Epidemical Diseases, 2 vols. 8vo. hoards, rtncut. Is Qd Edin., 1808 



' By far the best work that has appeared on those points of agricultural connexion.'— DonaWson. 



ROBERVAL (Giles Persone de)— v. Diverses Ouvrages {No. 1067), ante. 



4041 ROBINS (Benjamin, F.R.S., Engineer General to HE. I. Co.) Discourse concerning the 

 Nature and Certainty of Sir Isaac Newton's Method of Fluxions, and of Prime and 

 Ultimate Ratios, diagrams, 8vo. sewn, 6s 1735 



' In 1735 he demolished in the Biscmirse the objections brought by the celebrated Bp. Berkeley (v. No.ZAS, anfe) against 

 Newton's principle of ultimate ratios.' 



4042 Full Confutation of Dr. Jurin's Reply to the Remarks on his Essay on Distinct 



and Indistinct Vision, sm. 8vo. sewn, 3* 1740 



See JuBiN (No. 2209), ante, for the pamphlet which provoked it. 



4043 Mathematical Tracts, published [with Life (pp. 42)] by James Wilson, m.d., plates 



and diagrams, 2 vols. 8vo. old calf{\¥.B.Y RARE), £1. 105 1761 



Contents : I. New Principles of Gunnery, with several subsequent Discourses on the same Subject, the greatest Part 

 never before printed. II. Discourse on the Method of Fluxions, and of Prime and Ultimate Ratios, with other 

 Miscellaneous Pieces. 



4044 New Principles of Gunnery : containing the Determination of the Force of Gunpowder, 



and Investigation of the Difference in the Resisting Power of the Air to Swift and Slow Motions ; 

 with Account of his Life and Writings by James Wilson ; new Ed., with Additions by 

 Charles Button, f.r.s., 2 plates, Svo. hf. calf gilt {stamp on title), scarce, 12* Qd 1805 



4045 Another Copy, old tree-calf, newly rehacked, \Zs 



Last and best Edition of the author's most important work, including 14 other papers by him on the same subject. 

 ' The real founder of the science of gunnery was B. Robins, whose New Principles of Gunnery treated of atmospheri<! 

 resistance, the force of gunpowder, the effects of varying the length and weight of guns, etc. His invention, the Ballistic 

 Pendulum [dexribed and ilhistrated above], enabled the velocity of a cannon-ball to be measured '. 



4046 ROBINSON (Harry Perry) Pictorial Effect in Photography : Hints on Composition and 

 Chiaroscuro for Photographers, with Chapter on Combination Printing, 3 fne photographs, and 

 numerous plates and woodcuts, cr. 4to. hf. calf {title stamped), 5s 6d 1869 



4047 ROBISON (John, f.r s.e.) System of Mechanical Philosophy, with Notes by Sir David 

 Brewster, with 50 folding plates, 4 thick vols. Svo. boards, uncut, I2s 6d Edin., 1822 



4048 Another Copy, wanting the plates, 4 vols, cl., 4* 



Consisting of reprints of papers contributed to the Transactions of the Royal Society of Edinburgh, and articles in the 

 Encyclopedia Britannica. The article on the steam engine was revised and enlarged by Jamks Watt, the author's friend, 

 who acknowledged that Robison suggested to him the application of the steam engine to locomotion in 1759. 



' In 1769 Robison anticipated Meyer in the important electrical discovery that the law of force is very nearly or exactly 

 in inverse square.' — D. N. B. ' One of the greatest mathematical philosophers of his age.' — Sir James Mackintosh. 



4049 ROBSON (John Henry, pr.. Downing Coll.) GEOMETRICAL Drawing, 2nd Ed., enlarged, with 

 folding front, and numerous diagrams, cr. Svo. cl., 2* 1886 



4050 ROBSON (Thomas Charles," h.e.i.c.s.) Treatise on Marine Surveying, with 7 folding 

 plates, Svo. hf. calf {scarce). Is Qd 1834 



The first treatise on the subject in English. 



4051 RODING (Johann Hinrich [sic']) Allgemeines Worterbuch der Marine in alien euro- 

 paischen Seesprachen [deutsch, hollandisch, danisch, schwedisch, englisch, franzosisch, 

 italienisch, spanisch nnd PORTUGIESISCH] , nebst vollstiindigen Erkliirungen ; with 115 copper- 

 plates, 4 vols. 4to. sound copy in old calf gilt, £\. \s Hamburg [1794 8j 



The most complete dictionary of sea terms ever published. 



4052 ROHATJLT (Jacques) O^uvres Posthumes [publiees par Claude Clerselier] ; with 

 numerous diagrams, thick 4to., (?) Large Paper ; old calf gilt {fine copy), with bookplate of 

 Philip 2nd Earl Stanhope, F.R.S., 12s Qd 16S2 



Containing the ' Traite de mecanique '. 



4053 TRAIT1& de Physique ; with 16 folding plates, 2 vols. : Entretiens sur la PillLOSOPHlE 



— 3 vols. 16mo. in 2, fine copies in vellum, £1. lbs 



Amsterdam, Jacques le Jeune {a la sphere), 1672 — M. Le Petit, '74 



A finely printed and very rare edition, unknown to Poggendorff, Graesse, Querard, etc. 



4054 Trait^ de Physique ; with 16 plates, 2 vols.sm. Svo. old calf gilt, \2s Qd ibidem, [c. 1680] 



A spurious reprint of the above edition. All editions of this work are now rare. 



' II construisait avec trois tubes de verre une espece de barometre, connu anjourd'hui sous le nom de cJiatnhre de RohauV. 

 II demontrait, par les differentes refractions de la lumiere, que les couleurs n'etaient que des modifications de cette mati^rc. 

 Ses experiences sur I'aimant furent aussi tres-remarquables '.—Biogr. Gen. 



4055 — ^ — System of Natural Philosophy, with Dr. Samuel Clarke's Notes, taken mostly ont 

 of Sir I. Newton's Philosophy, done into English by John Clarke, Dean of Sarum, 2nd Ed., 

 plates, 2 vols. Svo. in 1, old panelled calf, newly rehacked (RARE), 16s Qd 1729-8 



This work long formed the text-book of physics at Camlaridge. The translation itself is of importance in the history rT 

 science as having been instrumental in introducing the Newtonian system there, by means of marginal notes in which the 

 translator exposed the fallacies of the Cartesian system, then still oTunipotent at Cambridge University. 



4056 ROHR (Moritz v.) Die binokularen Instrumente, nach Quellen bearbeitet ; with ^0 illus- 

 trations, roy. Svo. sewn, As Qd (p. M. 6.) Berlin, 1907 



The be.st history of the binocular telescope, with a copious bibliography of works of historical importance. 



4057 Theorie und Geschichte des photographischen Objektivs, nach Quellen bearbeitet ; 



with 4 lithographs, and 148 other illustrations, large Svo. sewn, 8* (p. M. 12.) lb., 1899 



Pp. 399-435 comprise a valuable bibliography. 



