112 IlENHV SOTHERAN & CO., 140, STRAND, W.C, and 37, PICCADILLY, W. 

 22-23 KAYSER (Edmond) Les Levures : Caracteies morpliologiques et physiologiques : Applications 

 des Levftres selectionnees ; with 25 illustrations, cr. 8vo. sewn^ \s Qd [18961 



2224 KAYSER {Heinrich) Lehrbuch der Spektralanalyse ; with 9 plates and 87 icoodcvts, 8vo. 

 hf. olive morocco, 6s 6rf (p. M. 10. unbound) Berlin, 1883 



2225 KECKERMANN (Bartholomseus) Systema Compendiosum totius Mathematices, hoc est, 

 Geometric, Optica, Astronomic: et Geographic ; accesserunt Commentatio Nautica et 

 Index ; with diagrams and curious map, ]2mo. old calf, Qs Qd Ilanovicc, 1621 



2226 KEILL (John, m.d., f.r s. ; detractor of Leibniz) Commercium Epistolicum— v. Newton- 

 lANA, post. 



2227 Examination of Dr. Burnet's Theory of the Earth, with Remarks on Mr. Wiiiston's. 



New Theory of the Earth, etc., 2nd Ed., ivith 13 copperplates, 8vo. old calf, Is 6d Oxford, 1734 



2228 Another Copy, contemporary mottled calf {nice copy), with bookplate of Philip 2nd Earl 



Stanhope, F.R.S., 95 



Disproving Burnet's and Whiston's hypotheses, and refuting Descartes's theory of vortices'. The author applies in 

 this work Huygens's theorem of centrifugal force to explain the figure of the earth. This edition contains a ' Dissertation 

 on the Different Figures of the Coelestial Bodies ', by Maupertdis, then staying in England. 



2229 Introduction to the True Astronomy : or Astronomical Lectures read in the Astro- 

 nomical School of the University of Oxford, 5th Ed., 2Q folding plates, 8vo. old calf, 45 1760 



2230 Introductiones ad Veram Physicam et Veram Astronomiam, quibus accedunt 



Trigonometria, de Viribus Centralibus, de Legibus Attractionis ; with 47 plates, 4to. old calf, or, 

 vellum, Is 6d Lugduni Bat., 1725 



2231 Another Copy, old calf gilt, with auto. 'Maiion [afterwards Charles 3rd Earl 



Stanhope, f.r.s.]. April the sixth 1798 {Good Friday)' on title, and MS. Index at end by 

 HIM ; also his bookplate, 155 



' It was considered his best performance, and generally welcomed as an excellent introduction to Newton's Princlpia '. — 

 D. N. B. 



2232 Introduction to Natural Philosophy : or Philosopliical Lectures read in 1700, with 



Demonstrations of Huygens's Theorems, concerning the Centrifugal Force and Circular Motion, 

 trans, from the Latin, 3rd Ed., with woodcuts and diagrams, 8vo. old calf with, booklabel of 

 Adam Smith, 7s 6c/ 1733 



2233 KELLAND (Philip, pr., F.R.S., Prof Math., Univ. Edin.) The Elements of Algebra, 8vo. cl. 

 {cover worn), 35 Edin., 1839 



2234 Lectures on the Principles of Demonstrative Mathematics, post 8vo. calf, 



ZsQd t6.,1843 



2235 Theory of Heat, 8vo. boards, or, calf, 2s Qd Cambridge, 1837 



22.36 Another Copy ; with Theories of Electricity, Heat, and Molecular Actions by 



Robert Murphy, pr., Caius Coll.— 2 vols. 8vo. in 1, hf. calf, 3* Qd ib., 1837-3 



2237 , and Peter Guthrie TAIT : Introduction to Quaternions, with numerous 



Examples, post 8vo. cl., 35 (p. 75 Qd) 1873 



The author, who was a member of Queen's Coll., Cantab., and Senior Wrangler in 1834, was the first Englishman with a 

 wholly English education who was admitted to a chair in the University of Edinburgh, and was one of the founders of the 

 Life Association of Scotland. 



2238 KELLY (Patrick) Practical Introduction to Spherics and Nautical Astronomy : an 

 Attempt to simplify those Sciences, 2nd Ed., augmented, with numerous plates, roy. 8vo., boards, 

 uncut, 105 Qd 1801 



2239 Fourth Edition, with Appendix on Time, Timekeepers, Transit Instruments, etc., 



numerous plates, roy. 8vo. calf {binding slightly wormed), \Qs Qd 1813 



' An endeavour to simplify stereographic projection by the discovery of a projection for clearing lunar distances in 

 order to find the longitude at sea, with a new melliod of calculating thi.s problem.' Pt. II contains a selection of the chief 

 propositions in nautical a.stronomy. The author long kept a successful private school, 'The Mercantile School,' in 

 Finsbury Square, and Avas acquainted Avith Dr. Maskelync, Sir John Herschel, and Dr. Hutton. 



2240 KELVIN (Sir William Thomson, Lord, p.r.s.) Elasticity, being the Article contributed to 

 the Encyclopredia Britannica, illustrated, 4to. (pp. 30), cl., 35 Qd Edin., J 878 



2211 — « — Mathematical and Physical Papers, collected from different Scientific Periodicals 



from May, 1841, to the Present Time, ivith 24 plates {many folding), besides numerous woodcuts, 



3 vols. 8vo. cl., £1. 125 Qd (p. £2. ] I5) Univ. Press, Cambridge, 18S2-4-90 



The last volume contains Elasticity, Heat, and Electro-Magnetism ; also 'Supplementary Articles written for the 



present Volume, and hitherto unpublished.* 



2242 The MOLECULAR Tactics of Crystal, ivith 20 illustrations, 8vo. sewn, 2s 



Clarendon Press, Oxford, 1894 

 2243 Popular Lectures and Addresses, Vol. I : Constitution of Matter, illustrated, 



post 8vo. cl., 35 6d 1889 



2244 Reprint of Papers on Electrostatics and Magnetism, with 3 plates (2 folding), and 



numerous woodcuts, thick 8vo. cl., 8s (p. I85) 1872 



2245 Another Copy, hf. morocco extra {nice copy), 10s 



2246 Second Edition [slightly enlarged] , with 3 plates and numerous woodcuts, 8vo. cl., 10s 



(p. I85) 1884 



2247 , and Peter Guthrie TAIT: Elements of Natural Philosophy, ivith numerous 



diagrams, 8vo. cl. {out of print), 5s Clarendon Press, Oxford, 1873 



2248 : Treatise on Natural Philosophy, Vol. I [all published], ivith diagrams, 



thick 8vo. calf 10s a. e., ibidem, 1867 



2249 Another Copy, hf. morocco extra {nice copy), 12s (Sd 



2250 New [last] Edition, illustrated, 2 vols. 8vo, cl., £\. 2s Qd (p. £1. 14s) 



Univ^ Press, Cambridge, 1890-5 

 •A work which, though never completed, has had an incalculable influence on the progress of physical science.* 



