42 HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, NV. 



803 CLARE (Martin, F.R.S.) The MOTION of FLUIDS, Natural and Artificial, in particular of the 

 Air and Water, 2nd Ed., with 8 plates, 8vo. old calf (fine copy], with bookplate, of Philip 2nd 

 Earl Stanhope, os 17.37 



804 CLARK [sioe CLEBKE] (Gilbert, pr.) OUGHTREDUS EXPLICATES, sive Commentarius in ejus 

 Clavem Mathematical^ cum Planetarum Observationibus et HOROLOGIORUM [SOLARIUM] 

 CONSTRUCTIONS ; with 2 folding plates, 2 vols. 12mo. in 1, old calf (nice copy], with bookplate of 

 Philip 2nd Earl Stanhope, 7s 6d Londini, 1682 



The author mentions in this work his invention of (he spot-dial. 



805 CLARK (Josiah Latimer, F.R.S. ; telegraph cable engineer) ELEMENTARY TREATISE on 

 ELECTRICAL MEASUREMENT, front., chart, and 41 woodcuts', post Svo. cl., 2s 1868 



806 , and Robert SABINE : ELECTRICAL TABLES and FORMULAE for Telegraph Inspectors 



and Operators, ivoodcuts, post Svo. cL, 2-s Qd 1871 



Although out of date, both voiles are of some historical value. 



807 CLARK (Samuel) EASY INTRODUCTION to the THEORY and PRACTICE of MECHANICS, containing 

 a Variety of Curious and Important Problems investigated with ; the greatest Facility by the 

 Application of one General Property of the Center of Gravity, without having Resource to the 

 Composition and Resolution of Forces, diagrams, 4to. old calf, with auto. (1790) and bookplate of 

 Thomas Lei/bourn (mathematician] ; rare, 10$ 1764 



803 CLARKE (Col. Ale:r. Ross, E.E., F.R.S.) GEODESY, with 64 illustrations, large Svo. cl , uncut 

 (FRESH COPY), 1. 5s Clarendon Press, Oxford, 1880 



The best modern text-book on the subject in English. It is out of print and now VERY SCARCE. 



809 CLARKE (Frank Wiggles worth) The CONSTANTS of NATURE, Part V : RECALCULATION of 

 the ATOMIC WEIGHTS, new Ed., enlarged, roy. Svo. half crushed green Levant morocco, uncut, 

 t. c. a. (FINE COPY), 15* Washington, 1897 



810 CLARKE (John Sutherland) The PROPERTIES of the PARABOLA proved geometrically, with a 

 Collection of PROBLEMS, diagrams, Svo. sewn, 2s Gd Cambridge, 1852 



811 CLAUSIUS (Rudolph) The MECHANICAL THEORY of HEAT, with its Applications to the 

 Steam- Engine, and to the Physical Properties of Bodies, ed. by THOMAS ARCHER HIRST, F.R.P., 

 with Intro, by JOHN TYNDALL, F.R.S., woodcuts, Svo. cl. (fresh copy], scarce, 8s 1867 



812 ANOTHER COPY, calf neat (stamp on title], 8s 



First English edition of this epoch-making work, which first placed thermodynamics on a scientific basis. It was 

 translated by Aarious hands from ' Abhandlnngcn iiber die mechanische Wiirmetheofie ' (1S64-7). 



813 - The MECHANICAL THEORY of HEAT, trans, by WALTER KALEIGII BROWNE, with wood- 

 cuts, post Svo. new hf. brown calf gilt, t. e. g. (SCARCE), 12$ 6d 1879 



A translation of the second and greatly' re vised edition of the Abliandluncten, with 3 Appendixes by Ihe translator. 



814 CLAVIUS (Christophorus, Bambergensis, s.J.) OPERA MATHKMATICA V Tomis diwtributa, ab 

 Auctore nunc denuo correcta, et plurimis Locis aucta; with engraved title containing portrait, and 

 numerous woodcuts and diagrams, 5 vols. folio, old vellum (badly browned] ; RARK, 3. 3s 



Moguntiv, 1612 



I. In Euclidem et in Theodosium commentarii ; de sinibus et lineis tangentibus et seeantibns ; triangula rectilinea et 

 sphamca. II. Geometria practica ; arithmetics practica ; algebra. III. In sphaeram Joa. d.; Sacro Bosco comineiitarius ; 

 astrobhium. IV. Gnomonices libri V11I ; fabrica et usus instrument} horologinrnm ; horologiorum nova desciiptio. V. 

 Roman! calendar!! a Gregorio XIII. restitutio ; Jos. Hcaligeri elenchus et castigatio cal. gregor. castigata ; responsio ad 

 calumnias Jos. Scaligeri ; confutatio calendarii Georgi Germanni. 



Clavius, ' the Euclid of the XVI. Century ', is chiefly known by having, at the instance of Pope Gregory XIII., worked 

 out the improvements in the Julian calendar which resulted in the Gregorian calendar. 



815 - ARITMETICA PRATTICA, tradotta di LORENZO CASTELLANO, revista dal med. P. Claviocon 

 alcune aggiunte, 12mo. old limp vellum, 8s Qd Venetia, 1G71 



' Perhaps there are more extensive examples of the square root worked by the old method in this treatise than would 

 easily be found elsewhere.' Prof. de. Alorgnn. 



COMMENTARIA in EUCLIDEM (1G12)-1\ EUCLIDES, post. 



818 COMPENDIUM brevissimum HOROLOGIORUM HORIZONTALIUM ac DECLINANTIUM : TABULA 



ALTITUDINUM SOLIS pro HORIS ASTRONOMICIS in Signomm Initiis, ad omnes Gradus Altitudinis 

 Poli Borealis : TABULA ASTRONOMIC^: ad HOROLOGIORUM Constructionem maximeutilcs, etNota- 

 in Novam Horologiorum Descriptionem 3 vols. cr. 4to. in one, with icoodcuts and diagrams ; 

 old limp vellum (RARE), 1. Is Homo', 1003-5 



817 - GNOMICES Libri VIII, in quibus non solum HOROLOGIORUM SOLARIUM, sed etiam aliarum 

 quoque Rerum, qua? ex Gnomonis Umbra cognosci possunt, Descriptiones geometrice demon- 

 strantur, editio princeps ; with engraved title, icoodcuts and diagrams, folio, old parchment (top 

 of back damaged, and title and a few II. stained) ; RARE, 1. 5s ibidem, 1581 



S18 - - PtOMANi CALENDARII a GREGORIO XIII. P.M. restituti EXPLICATIO, dementis VIII. P.M. 



jussu edita; accessit Confutatio eoruin, qui Calendarium aliter instaurandum contenderunt, editio 



princeps, folio, contemporary pressed pigskin on oaken boards, sides covered with floral design, 



clasps (back slightly damaged, and a number of II. water-stained) ; RARE, 1. 105 ibidem, 1603 



First edition of the official explanation of the Gregorian calendar, largely the result of the author's labours. 



819 In SPILSRAM JOANNIS de SACRO Boscp COMMENTARIUS, nunc quarto ab ipso Auctore 



recognitus, et plerisque in locis locupletatus ; with numerous woodcuts and diagrams, sm. 4to. old 

 limp vellum, 12s Qd S. Gcrrasii, 1602 



820 CLERK (John, of Eldin, F.R.S. Edin.) ESSAY on NAVAL TACTICS, Systematical and Historical, 

 Parts 1-IV (all pub.), first complete edition, with 52 plates (many folding], 2 vols. 4to. original 

 boards, uncut, u- ith auto. o/'JoiiN CLERK, Advocate' [LORD ELDIN], the author's Son (RARE), 

 1. 15.; . 1700-7 



One of the most interesting works on the subject, which gave rise to a prolonged controversy on its merits, it having 

 been claimed that the author's new proposal of a manoeuvre for ' breaking the enemy's line' had been adopted by Lord 

 Rodney at the battle oft' Dominica, April 12, 1782, and had largely contributed towards the victory. Prof. Laugbtt 

 however has since shown that then' is very little, if any. rvidnin' for this assertion. 



