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



22o'2 KEITH (Thomas) Introduction to the Theory and Practice of Plane and Spherical 

 Trigonometry, including the Theory of Navigation, improved Ed., with plates and diagrams^ 

 8vo. cnlf (joints cracked), 3s 1810 



22j3 KEKUL6 (Friedrich. August v.) Lehrbuch der Organisciien Chemie, fortgesetzt unter 

 Mitwirkung v. R. Anschutz und G. ScHULTZ, Band 2-3, und Bd. 4 Lfg. 1 (soweit 

 hisher erschienen), roy. Svo. in parts as issued {partly out of print), 12.? 6c? (p. M.41.) 



Erlangen, \8QS-Stvttgart, 18S3 

 Prof. Kekuld was one of the founders of structure chemistry, and the first to point cut the tetratoinicity of carbon, and 

 tlie above work ' served to develop the ' typical ' view, and (in its second volume) strengthened his own assumption as to 

 the mode in which atoms are combined with one another.' — Prof. E. v. Meyer. 



i.»Jj4 KEMPE (Alfred Bray, f.r.s.) How to Draw a Straight Line : a Lecture on Linkages, 

 tcith 34 woodcuts, post Svo. cl. (scarce), 5s 1877 



The discovery of drawing sti-aiglit lines by means of the link-motion was discovered by Pkaucellikk, and is here 

 much enlarged by the author. The alxjve is the fullest work on the subject. 



•2200 KEMPE (Harry Robert, g.p.o.) Handbook of Electrical Testing ; third Ed., with folding 

 taldc and 135 woodcuts, or. Svo. cL, As (p. 12* 6c/) 1884 



2256 KENNEDY (Sir Alexander Blackie William, f.r.s.) The MEcnANics of Machinery, with 

 numerous illustrations, thick post Svo. cL, 5s (p. 12* Gd) 1886 



One of the best English textbooks on the subject. 



2257 KENNEDY (Rankin) The Modern Machine Shop : its Tools, Practice, and Design, Vol. I, 

 with 8 plates, and 225 woodcuts, 4to. cl., Gs (p. 9* nett) 1007 



' The Hrst volume is intended to give a survey of the machinery, processes, and materials employetl in the first stages of 

 production in metal-working machine shojis, showing the mo<les of preparation of the rough forms of materials, previous 

 to thtir entry to tite shop for accurate linishing and fitting.' — /Vc/fc-e. 



2J5S KENNELLY (A. E.), and H. D. WILKINSON : Practical Notes for Electrical 

 Stldents: Vol. I: Laws, Units, and Simple Measuring Instruments, tV/w^^ra^erf, Svo. c/., 

 ;iy(p. 65 6(/) 1890 



•JJ50 KEPLER (Johann) Opera Omnia, edidit [et Notas adjecit] Christianus Friscii ; with 

 portrait, 3 plates, fs. letter^ and numerous diagrams^ S vols. roy. Svo. in 9, cl. (FRESll SET), £2. lO? 

 (p. M.114. unbound) Frankofurti a.M.y 1858-71 



The only complete edition of the author's works ever printfd. 



2260 ASTRONOMIA Nova AITIOAoruros, aeu Physica Ctelestis, tradita Commentariis de 



MOTIBUS Stell;e Martis, ex observationibus Tyciionis ]5rahe, plurium annorum pertinaci 

 studio elaborata Prag.-e ; with folding table, and numerous diagrams, folio, old ca^/" (excessively 

 RARES £7. 75 [Pragic], 1609 



2261 Another Copy, hf. hound [title and folding table mounted, a number of II. guarded or 



mended, and some defective, and verses to Tycho Brake torn in pieces, and the paper brittle through- 

 out, but the text itself in good condition) ; a very cheap copy, £1. \Gs 



Original Edition of this important work, announcing the first two of Kepler's 'three laws': (1.) The orbit of the 

 planet Mars is an ellipse, of which the sun is in one focus. (2.) lu describing its orbit, the radius vector of the planet 

 traverses equal areas in equal times. 



2232 Chili AS Logarithmorum ad totidem Numeros Rotundos, pr.nemiss.l Demonstratione 



Legitima Ortus Logarithmorum eorumque Usus, quibus Nova traditur Arithmetica, seu Com- 

 pendium, quo post Numerorunii Notitiam nullum nee admirabilius, nee utilius solvendi pleraque 

 Problemata Calculatoria ... in Numeris prolixis, citra Labores molestissimos, editio princeps ; 

 with diagrams, and folding table, sm. 4to. sewn (VERY SOUND AND TALL COPY) ; rark, £\.\s 



Marpurgi, 1624 



2233 SUPPLEMENTUM Chiliadis Logarithmorum, continens Pr.Tcepta de eorum L^su, editio 



princeiMB, sm. 4to. sewn {slightly browned as ustial, otherwise a sound and very tall copy), \2s 



ibidem, 1625 

 Itased on Napier's logarithms but differing in liaving the r««ZtH5 (against Napier's arc of the quadrant) divided into equal 

 I)art.H. The two works are important as having introduced the use of logarithms on the continent. 



'Kepler's table is more convenient than Napier'sasatableof the logarithms of eominon numbers.'— C/ia»7f» Uutlon, F.R.S. 



2231 De Cometis Libelli III: I. Astronomicus, Theoremata continens de Motu Cometanim, 



ubi Demonstratio Apparentiarum et Altitudinis Cometanim qui Annis 1607 et 1618 conspecti sunt, 

 nova et Tropd^o^of: II. Piivsicus, continens Physiologiam Cometarum novam et iragu^olov. III. 

 ASTROLOGICUS, de Significationibus Cometarum Annorum 1607 et 1618; with 2 folding plates and 

 folding table, sm. 4to. sewn (VERY SOUND AND TALL COPY) ; RARE, £1. 1* Aug. Vindel., 1619 



'The first approach to anything resembling a rational explanation of the tails of Comets is unquestionably due to 

 Kf-pler.' — I'roJ. R. Grant. The work also contains the second observation of Ilalley's Comet, and propounds the erroneous 

 theory that comets move in a straight line. 



2265 DiOPTRlCE, seu Demonstratio eorum qua; visui et visibilibus propter Conspicilla non ita 



pridem inventa accidunt. Praemissae Epi.STOLiE Galil^ei de iis, item Examen prasfationis Jo. 

 Pen.e Galli in Optica Euclidis, de usu Optices in philosophia, editio princeps ; with woodcuts, 

 and numerous diagrams, cr. 4to. new hf. calf gilt (FINE AND tall COPY) ; VERY rare, £2. 5s 



ibidem, 1611 



2266 Another Edition, with woodcuts and diagrams, sm. Svo. old panelled calf (rebacked)^ 



8s Gd Londini, Jac. Flesher, 1653 



The first edition printed in England. 



This is next tohis 'Astronomia Nova' and 'Harmonices Mundi' Kepler's most important work, containing the first 

 account of his Invkntion of the Astronomicai. Telkscope, consisting of two convex lenses, as opposed to Galileos telescope 

 of one concave and one convex lens. 



•L'auteur eii'ploie Ic p;remier la regie approximative de la proportionnallt6 de Tangle de refraction 4 Tangle d' incidence 

 pour etudier les propri^tes dea lentilles plano-spheriques, et il donne des formulas, encore usitees aujourd'hui i)our calculer 

 les distances des foyers de semblables lentilles '.—Biogr. Gen. 



