HExVRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 233 



4590 STEWART (Alfred Walter) Stekeochemistry, with 87 illustrations^ thick post Svo. cZ., 65 

 (p. 10,9 Of/) 1907 



4591 STEWART (Balfour, f.r.s.) The Coxskilvation of Energy : an Elementary Treatise on 

 Energy and its Laws, 14 woodcuts, post Svo. c/., 2^ 6c? (p. 5*) " 1873, '4, or 7 



This admirable popular exposition was translated into French, German, and Czech. 



4592 Elementary Treatise on Heat; 2nd Ed. [enlarged], with 79 woodcuts, cr. Svo. c/., 



2s (p. 7* Qd) Clarendon Press, Oxford, 1871 



4593 Fifth Edition [revised by P. G. Tait] , with 85 illustrations, cr. Svo. hf. calf neat {title 



stamped), Zs 6d a. e., ib., 1SS8 



4594 Lrssons in ELEMENTARY PHYSICS, new Ed., icith coloured front, and 137 woodcuts, 12mo. 



cL, 2s (p. 4? Qd) 1870 



4595 , and William Winson Haldane GEE : Lessons in Elementary Practical Physics, 



with over 300 woodcuts and diagrams, 2 vols. cr. Svo. cl., 5s (p. 13* 6d) 1885-7 



4596 Last Edition, with 326 woodcuts, 2 vols, post Svo. cl., 7s 6d (p. 13* 6d) 1904-3 



'Ihe most complete exposition of exp«'riinental methods in physics which has been written.' — Prof. A. Schuster, F.R.S. 



4597 C , and Peter Gutkrie TAIT :] The Unseen Universe, or Physical Speculations on a 



Future State, first edition, Svo. cl., os 1875 



4598 Second Edition [with new Preface in answer to Critics, especially Prof. W. K. Clififord], 



Svo. cl. (name cut off title and cover worn), 4? 1875 



' Aiming' at deducing from the combination of a number of theolof^ical postulates with current scientific doctrines the 

 existence of the soul and of a transcendental universe '. — D. N. B. It went through 14 editions. 



4599 STEWART (John) Description of a Machine or Invention to work Mills by the PtWER 

 of a Fire-Engine, but particularly useful and profitable in Grinding Sugar-Canes, witii Plan 

 of a Fire Engine, the said Machine, and a Sugar Mill and Boiling House, and Appendix, shewing 

 the Utility of the said Invention, and Calculation of the Power of Cattle and Fire Engines in Grind- 

 ing Canes, large folding plate illustrating the engine, Svo. (pp. 54), sewn (very rare), £1. 5s [1767] 



a very rare pamphlet, containing an account of tlie author's invention, the first engine for working a cane-mill, and accord- 

 ing to Robert Stuart, thk first machine patknted converting rectilinbar into rotary motion. Nothing appears to bo 

 known about its author, but there is a reference to the machine in one of James Watt's letters (Muirhead's Life of Watt, 

 2nd Ed., p. 274): 'One Stewart had a patent for an engine which produced a rotative motion, by a chain going round a 

 pulley and round two barrels furnished with ratchet wheels, with a weight suspended to the free end of the chain, which 

 servetl to continue the motion during the return of the engine. I have never seen this, but believe there was no fly.' 



4600 STEWART (Matthew, f.r.s., Minister at Eosneath; Prof Math., Edin.) The Distance of 

 the Sun from the Earth determined, by the Theory of Gravity, with 2 plates, Svo., Thick 

 Paper ; contemporary green morocco extra, g. e. {fine copy) with bookplate of Philip 2nd Earl 

 Stanhope, F.R.S., \Qs %'d Edin., 1763 



The subject is treated geometrically. The author wrongly computed the distance at 119,000,000 miles, which evoked a 

 bitter attack by John Landkn, k r.s. {v. No. 2422). 



4601 Some General Theorems of Considerable Use in the Higher Parts of Mathe- 

 matics, with 4 folding plates, Svo. old calf gilt, newly rebacked (rare), 18* Qd ib., 1746 



Including his discussion of the properties of the circle and straight line, treated by ti-ansversals and involution. 



* He pursued the subject of porisms in a different and new direction. In doing which, he was led to the discovery of 

 tho.se curious and interesting propositions, which were published under the title of General Theorems, in 1746 . . . They 

 placed their discoverer at once among the geometricians of the first rank . . . They are among the most beautiful, as well 

 as most general propositions known in the whole compass of geometry.' — Dr. Ilutton, F.R.S. 



4602 Tracts, Physical and Mathematical, containing an Explanation of several important 



points in Physical Astronomy, and a New Method for ascertaining the Sun's Distance 

 from the Earth, by the Theory of Gravity, with 19 folding plates, Svo. hf calf neat {nice copy) ; 

 rare, \5s ib., 1701 



' In these tracts, after laying down the doctrine of centripetal forces in a series of propositions requiring riily a 

 knowledge of the elements of plane geometry and of conic sections, he proceeded to determine in the same manner 'the 

 effect of those forces which distuib the motions of a secondary planet.' A" theorem in which he deduced the motions of 

 the moon's apsides attained an accuracy far surpassing that reached by Newton. The result confirmed that arrived at by 

 Charles Walmsley in 1749 {q. v. post.).'—D. N. B. 



4603 STEWART (R. Wallace) Magnetism and Electricity: Second Stage, 2nd Ed., rewritten, 

 illustrated, cr. Svo. cl., 2s 1906 



4004 The Tutorial Physics, with numerous Examples (Vv. I and IV, 4th Ed , vv. II and III 



3rd Ed.), copiously illustrated, 4 vols. cr. Svo. cL, 65 (p. 14*) 1899-1903 



4605 STIFEL (Michael) : Die Coss [i.e. Algebra] Christoffo Rudolffs, mit schonen Exempeln 

 der Coss, gebessert und sehr gemehrt ; with diagrams, woodcut device and arms at end, thick cr. 

 4to. old vellum [title slightly mended, and ff. 475-8 in MS., but a sound copy) ; very rare, £1. 10* 



[tiile :'] n.p., 1571 [col.:'\ Konigsberg in Pr., 1554 

 ' In 1.553 Stifel brought out an edition of RudolfTs Die Coss in which he introduced an improvement in the algebraic 

 notation then current. The symbols at that time ordinarily used for the unknown quantity and its powers were'letters 

 which stood for abbreviations of the words. Among those frequently adopted were R or Rj ftir rculix or res (x), Z or C for 

 zensus or census (x*), C or K for culms (x*), etc. Thus x* -t- 5x — 4 would have been written 1 / p. 5 iJ m. 4 ; where p stands 

 for plus and m for minus. The advance made by Stifel was that he introduced th"^ .symb(jl.< 1^, \AA, lAAA, for the 

 unknown quantity, its square, and its cube, which shewed at a glance the relation between them.' — IV. W. R. Bull. 



4606 STILLMAN (Thomas Bliss) Engineering Chemistry: a Manual of Quantitative Chemi- 

 cal Analysis for Students, Chemists, and Engineers, with 154 illustrations, roy. Svo. cl.. Is Qd 

 (p. 10.« ed nett) Easion, Pa., 1897 



4607 STIRLING (James, f.r s.) Methodus Differentialis : sive Tractatus de Summatione et 

 Interpolatione Serierum Inhnitarum ; with diagrams, cr. 4to. sewn {a few II. water-stained on 

 corner, and one I. slightly defective) ; very rare, £1. 10* Londini, 1764 



This work is of imixtrtance in the history of the differential calculus, as having been the first to give the proof of 

 what is known as ' Maclaurin's theorem ' [i'. Sos. 2761-3, ante] ; but, save for Montncla, who gives a full account in his 

 Histoire des mathematiques, v. Ill, pp. 2i'3-7, the work is, curiously enough, almost unnoticed in modeFft histories ci{ 

 mathematics. 



