HENRY SOTHERAN & CO., 140, STRAND, W.C., and 3t, PICCADILLY, W. 355 



6935 CLAVERING (Robert, builder) Essay on the Construction and Building of Chimneys, 

 the coninion Causes of their Smoaking, and the most effectual Remedies for removinf? so intoler- 

 able a Nuisance ; with Table to proportion Chimneys to the size of the Room, loith folding copper- 

 plate, 8vo. ccdf {back of binding damaged), 7s 6c? 1779 



6936 CLAVIXJS [Germanice SGHLUSSEL] (Christoph, s.J., Bamberg) Aritmetica Prattica, 

 tradotta da Lorenzo Castellano, Patritio Romano, prima edizione italiana, 12nio. con- 

 temporary vellnm {back of binding damaged) ; rare, 15s Roma, 1586 



6937 NuovA Edizione, revista dal medemo Padre Clavio, con alcune Aggiunte, 12mo. old 



velhim {binding defective). Ids 6rf ibidem, 1602 



6938 Altra Edizione, 12mo. old limp vellum, &s 6rf ib., 1613 



A translation of the 'Epitome' 



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

 easily be found eNewhere.'— i'ro/. de Morgan. 



6939 Epitome Arithmetic.e Practice, nunc denuoab ipso Auctore recognita, 12mo. original 



limp velhim (fine COPY) ; rare, 12s dd ib., Dominicus Basa, 1585 



6940 ^ Geometria Practica, editio princeps ; with numerous diagrams, sm. 4to. contemporary 



limp velhim {some II. browned, otherwise a fine COPY) ; RARE, 185 ib., A. Zannettus, 1604 



Containing the author's invention of a new transversal measure. ' Hciu Werk ist Muster eines l^chrbcgriHs dcr prak- 

 tischen Geometric, vollkommen fiir seine Zeit.' — Kaestiifr. 



6941 Gnomices Libri VIII, in quibus non solum HoROLOGiORUM SOLARlO, sed aliarum quoque 



Rerum, quae ex Gnomonis Umbra cognosci possunt, Descriptiones g:eometric6 demonstrantur, 

 editio princeps; ivith finely engraved title, u'oodcnts^ and numerous diagrams, folio, VERY FINE 

 AND TALL COPY iH old English calf with auto. ' L^ Arundell' [Thomas Howard, 2nd Eahl 

 OF Arundel and Surrey, 1586-1646], £2. 2s ' ibidem, apud eundem, 1581 



'C'est le plus grand oiivrage cxistant sur la gnoinonique.'— FoMzeau et Lancaster. It was reprinted in 1537, 1602, 

 and 1611. 



6942 HOROLOGIORUM NovA Descriptio ; with woodcuts and numerous diagrams, sm. 4to. old 



Italian white vellum (fine copy) ; rare, £1. 10* ib., a. e, 1599 



' Hare '.— //o«rmM et Lanvcuiter, who mention the work under No. 11,396, It lias only been once reprinted, viz. in the 

 edition of the author's complete works. 



6943 RoMANi Calendarii a Gregorio XIII. P.M. restituti Explicatio, dementis VIII. 



P.M. Jussu edita: Xovi Calendarii Romani Apologia adversus Michaelem M.estlinum 

 Gaeppingensem . . . explicata. Appendix ad Novi Calendarii Romani Apologiam, in quo 

 JosEPHUS Scaliger, Georgius Germannus, et Franciscus Vieta, qui Calendarium aliter 

 instaurandum esse contenderunt, seorsim singuli confutantur ; accessit Refutatio CYCLOMETRliE 

 ejusdem Scaligeri ; with diagrams, folio, old vellum {browned as usual), £1. 55 Moguntiw, 1612 



The above copy belonged to Urook Tavi.or, f.r.s. (1CS5-1731), the inventor of the calculus of finite differences, and has 

 liis auto, pasted on title, and several MS. corrections. There is also added, in a very seat old hand, a ' Stellarura 

 Australium catalogus ad Annum, 16t)2.' 



The above forms the fifth vol. of the author's complete works, and is the official exposition of the GRPXiORiAN Calkndab, 

 which was largely the author's work, with replies to the attacks by the more prominent dissenting mathomaticians. 



6944 InSPiLERAM JOANNis de Sacro Bosco Commentarius, editio princeps ; with numerous 



woodcuts and diagrams, sm. 4to. old limp vellum, tvith old auto. ' ex libris Philippi De Cherubinis^ 

 on title, 16* Qd Ilomw, Vict. Hell anus, 1570 



6945 Editio Tertia, ab ipso Auctore recognita, et plerisque in liocis locupletata. Majori 



item Cura correcta ; with numerous woodcuts and diagrams, sm. ito. old vellum {fine and large 

 copy), 15s Venetiis, Bern. Basa, 1596 



6946 OiiAXTON (Captain, R.N. , Managing Director) Description of the Great Britain Steam 

 Ship, built at Bristol, for tlie Proprietors of the Great Western Steam Ship Company ; with 

 the Comparative Merits of Iron and Wood as Materials for Ship Buildinj,', with 5 plates, 8vo. 

 (pp. 16), sewn, 3* 6(/ Bristol, 1845 



6947 CLEBSCH (Rudolf Friedrich Alfred) Lecons sur la Geometrie, recueillies et complcteos 



gar Ferdinand Lindemann ; traduites par 'Adolphe Benoist ; Tomes I et II : Traite des 

 ections coniques et Introduction ;i la Theorie des Formes algcbriques ; Courbes al^'ebriques en 

 general et Courl>es du 3« Ordre ; witJi numerous diagrams, 2 vols. roy. 8vo. in 1, buckram, uncut, 

 with bookplate of Prof H. W. LI. Tanner, F.R.S., Us (p. F. 26nett unbound) 1879-80 



6948 Theorie derELASTiciTAT fester Korper, Svo. hf red calf gilt (scarce), 15s Leipzig, 1862 



6949 CLEGG (Samuel) Practical Treatise on the Manufacture and Distrihution of Coal- 

 Gas, its Introduction and Progressive Improvement; with General Estimates, 5th [LAST] Edition, 

 greatly enlarged, with 33 plates {many folding), and 174 woodcuts, 4to. cl., iSsQd (p. £1. Is) 1868 



6950 CLERKE (Agnes Mary) Popular History of Astronomy during the Nineteenth 

 Century, third Edition [greatly enlarged], with vhoto front., vignette, arid opiates, thick Svo. 

 cl., 65 6rf (p. 155) 1893 



The best History of Mo<lern Astronomy, by one of tlie ablest modem women astronomers, whose death leaves Lady 

 lluggins tho doyenne of tlie illustrious succession of Caroline Herschel. 



6951 The System of the Stars, 2nd [latest] Edition, with 20 plates and 37 woodcuts, thick 



Svo. d., 145 (p. £1. nett) 1905 



An excellent treatise on Sidereal Astronomy. 



6952 CLERKE (Gilbert ; pr., mathematician) The Spot-Dial, very useful to shew the Hour within 

 the House ; with Directions how to find a true Meridian, the Azymuth and Declination ; and how 

 to draw a Dial upon a Staff, Ceiling, or any Pillar or Globe, with 2 woodcuts, sm. 4to. extra 

 boards {corner of title mended, and a few II. slightly stained) ; VERY RARE, £1 . 155 W. Keitilby, 1 687 



The 'spot dial" was the author's own invention. ''The use of it is to .see the hour by the rays of the sun passing 

 through a hole, and terminated in a glass set in a frame within the house against the window ; the ground of it is the 

 same with that of the sun's light passing through a hole in the window, and intercepted by a string, and of the Cieling. 

 Dial, where the roHecting-glass is supp«»sed to be a point in the stjie.'— iVc'«c«. 



