HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 501 



10017 KECK (Wilhelm) VORTRAGE liber ELASTICITATS-LEHRE, als Grundlage fur die Festigkeits- 

 Berechnung der Bauwerke ; with 300 diagrams, roy. 8vo. hf. German calf, 5s (p. M. 11. 50) 



Hannover, 1893 



10018 KEEB (P.) GALVANISCHE AFSCHEIDING van METALEN ; with woodcuts, post 8vo. sewn, 2s 



Haarlem, 1855 



10019 KEESOM (W. H.) ISOTHERMALS of MIXTURES of OXYGEN and CARBON DIOXIDE, 2 plates, 

 roy. 8vo. (pp. 79), sewn,, Is Qd Leiden, 1903 



10020 KEESS (Stephan Edler v.) DARSTELLUNG des FABRIKS- und GEWERBSWESENS in seinem 

 gegenwartigen Zustande, vorziiglich in technischer, mercantilischer und statistischer Beziehung, 

 2. vermehrte Ausgabe, 3 vols. 8vo. hf. calf, 5s Wien, 1824 



KEILL (John, M.D., F.R.S. ; Savilian Prof. Astronomy, Oxon. ; detractor of Leibniz) 

 COMMERCIUM EPISTOLICUM v. NEWTONIANA, post. 



10021 EXAMINATION of DR. BURNET'S THEORY of the EARTH, with Remarks on MR. 



WHISTON'S NEW THEORY of the Earth, etc. ; 2nd Edition, with 13 copperplates, 8vo. boards, 

 uncut, Is 6d Oxford, 1734 



Disproving Burnet's and Winston'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, with a Summary Exposition of the Cartesian and Newtonian Systems,' 

 by MAUPERTUIS, then staying in England. 



10022 INTRODUCTIO ad VERAM ASTRONOMIAM, seu Lectiones Astronomies habitae in Schola 



Astronomica Academite Oxoniensis, editio princeps ; with 2 lunar maps by M. Burghers, 

 woodcuts, and diagrams, 8vo. old calf, newly rebacked (fine copy], 8s 6d 



ibidem, e Theatro Sheldoniano, 1718 



10023 ANOTHER COPY, contemporary calf, with NUMEROUS MS. NOTES BY RICHARD 



WATSON, F.R.S. (1737-1816), absentee Bp. of Llandaff, and his Calgarth Park booklabel, 12s Qd 



10024 EDITIO SECUNDA, multo auctior et emendatior ; with 2 plates, and numerous ivoodcuts 



and diagrams, 8vo. old calf (joints cracked), 5s Londini, 1721 



10025 ANOTHER COPY, contemporary panelled calf (nice copy], 6s 



10026 INTRODUCTION to the TRUE ASTRONOMY : or Astronomical Lectures read in the Astro- 

 nomical School of the University of Oxford, 2nd Ed., with 27 copperplates and 2 lunar maps, 8vo. 

 old calf gilt, 5s 1730 



10027 SIXTH EDITION, corrected, with 26 copperplates and 2 lunar maps, 8vo. sound and clean 



copy in old rough calf, 5s 1769 



' Consisting of his Savilian lectures, and giving a sketch of the history of astronomy. He reprinted it in English with 

 many emendations at the request of the Duchess of Chandos.' D. N. B. 



10028 INTRODUCTION ad VERAM PHYSICAM: sen Lectiones Physicae habitse in Schola 



Naturalis Philosophise Academice Oxoniensis, quibus accedunt Theorematum Hugenianorum de 

 Vi CentrifugCi et Motn Circulari Demonstrationes, Editio IV. ; ivith woodcuts and numerous 

 diagrams, 8vo. old calf, with Bp. Watson's Calgarth Park booklabel, 6s Londini, 1719 



10029 EDITIO SEXTA, ab aliarum Editionum Mendis purgata ; with 12 copperplates, large 8vo. 



boards, uncut, with auto, and Calgarth Park booklabel of BP. WATSON, 7s Qd Cantabrigice, 1741 



10030 INTRODUCTION to NATURAL PHILOSOPHY : or Philosophical Lectures read in 1700, with 



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

 trans, from, the Latin ; 3rd Edition, with woodcuts and diagrams, 8vo. old calf, 5s 1733 



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

 D. N. B. 



10031 TRIGONOMETRIC PLAN.E et SPHJERIOE ELEMENTA ; with 4 folding plates, 8vo. sewn, 



3s Oxonii, 1806 



v. EUCLIDIS ELEMENTA, Nos. 1211-12, 1221, and 7628-9, ante. 



10032 KEIR (James, F.R.S.) EXPERIMENTS on the CONGELATION of VITRIOLIC ACID : Beddoes 

 (Thomas, M.D.) ACCOUNT of some NEW EXPERIMENTS on the PRODUCTION of ARTIFICIAL 

 COLD : Bennet (Abraham, pr., F.R.S.) ACCOUNT of a DOUBLER of ELECTRICITY, or a Machine 

 by which the least Conceivable Quantity of Positive or Negative Electricity may be continually 

 doubled, till it becomes perceptible by common Electrometers, or visible in Sparks, with folding 

 plate, 4to. (pp. 30), sewn, 10s Qd 1787 



Bennet's memoir contains his discovery of the principle of doubling in electricity, afterwards utilised by Nicholson in 

 his ' revolving doubler.' 



10033 [(KEIR W.)] SUMMONS of WAKENING ; or the EVIL TENDENCY and DANGER of SPECULATIVE 

 PHILOSOPHY, exemplified in MR. LESLIE'S INQUIRY into the NATURE of HEAT and MR. 

 MALTHUS'S ESSAY on POPULATION, with a Prospectus of an Inquiry into the Origin of Government 

 and Law, with 2 folding plates, 8vo. contemporary hf. calf gilt (fresh copy) ; RARE, 15s 



Hawick, 1807 

 Directed against Sir John Leslie (o. Nos. 2563-4, ante) and Malthus, ' whose works have a distinct tendency to 



destroy the fear of God in the minds of men, and to overturn both the established religion and government of this 



kingdom ' (p. 3). 



The above copy belonged to Richard Watson, F.R.S. (1737-1816), the absentee Bp. of Llandaff, who has added the author's 



name on title. The authorship was unknown to Halkett and Laing. 



10034 KELLAND (Philip, pr., F.R.S.. Prof. Math., Edin. Univ.) THEORY of HEAT, 8vo. boards, 2s 



Cambridge, 1837 



10035 , and Peter Grtithrie TAIT; F.R.S. E. : INTRODUCTION to QUATERNIONS, with numerous 



Examples, diagrams, post 8vo. cl., 2s Qd (p. 7s Qd) 



10036 SECOND EDITION, with diagrams, post 8vo. cl., 3s Qd (p. 7s Qd) 1882 



The author, who was a member of Queen's Coll., Cantab., Senior Wrangler in 1834, and the teacher of James Clerk 

 Maxwell, 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. 



