370 HeNRV SOTHEHAN & CO., 140, STRAND, W.C, AND 37, WCCADlLLY, W. 



7241 DENTON (John Bailey, m.i.c.e.) Sanitary Engineering : Lectures before the School of 

 Military Engineerings Chatham, 187(3, with 25 folding plates, and mimerous woodcuts, thick roy. 

 8vo. hf morocco {out ofpHnt), lOs (p. £1. 5s) 1S77 



A standard work on the subject. 



7242 DENZA (Francesco, Barnahita) Elementi di Aritmetica, 2^ Edizone, cr. 8vo. hf. vellum, 

 2s Torino, 1871 



7243 DiJPIERRE (Joseph) Rapport sur les Industries de I'Impression et de la Teinture a 

 I'Exposition Universale de 1878 ; with ivoodcuts, inipl. 8vo. (pp. 73), sewn, 2s 6c? Eouen, 1880 



7244 DESABGUES (Gdrard) Algemeene Manier tot de Practyk der Perspectiven, gelyk tot 

 die der Meet-Kunde, met de kleine Yoet-maat, mitsgaders der Plaatsen, en Proportien van de 

 sterke en tiaauwe Rakingen, of Kleuren; by-een-gevoegt door Abraham Bosse, en uit Frans 

 vertaalt J. Bara ; with engraved title, and 156 copperplates : [Bosse (A.)] Algemeen Middel 

 tot de Praktijk der Doorsicht-Kunde op Tafereelen, of Reg el- lose Buyten gedaanten ; 

 with copperplates— 2 vols. 16mo. in 1, old calf [partly ivater-stained), \2s Amsterdam, 1686 



7245 Unia'ERSAL Way of Dyaling, or Plain and Easie Directions for placing the Axeltree, 



and marking the Hours in Sun-dyals, after the French, Italian, Babilonian and Jewish Manner; 

 Mith the Manner of drawing the Lines of the Signs, of finding out the Height of the Sun above 

 the Horizon, and the East-rising of the same, the Elevation of the Pole, and the Position of the 

 Meridian, all which may be done in any Superficies whatsoever, and in what Situation soever it 

 be, without any Skill at all in Astronomy [trans, with Preface] by Daniel King, vith engraved 

 front, and numerous other copperplates, sm. 4to. contemporary sheep [one joint cracked, hut a large 

 and sound copy), vnth auto, of Francis Wrangham, Archdn. of Cleveland, F.R.S., classical 

 scholar (1769-1842) ; VERY RARE, £1. 15* Tho. Leach, 1659 



' On y trouve un grand detail de figures et d'explications sur la nianiere do placer I'axe d'un cad ran mecaniqueuient par 

 Irois ix)ints d'ombre, et de tracer Tequinoxiale en faisant tourner une equerre autour de I'axe, et dirigeant un HI le lung de 

 Vequerre.'— Laid nde. 



The above works were termed by Prof. Cantor ' precurisors of that science which about 150 years afterwards receiAcd 

 the name of descriptive geometry.' 



The author is most celebrated for his ' Sections coni((ues ', published in 1()39, but now almost entirely lost. 



7246 DESBEAUX (^mile) PllYSKiin: Populaire ; vith 4 coloured plates, and 508 woodcuts, impl. 

 8vo. cl. gilt, 6s (p. F. 15 nett) 1891 



7247 DESBOVES (Adolphe) Questions de Geometrie Elementaire : Method es et Solutions, 

 avec Expose des principales Theories et de nombreux Exercice^ proposes, 2" Ed., refondue et 

 augmentee ; uith 12 plates, 8vo. sewn (rare), 6s 1875 



7248 Questions de Trigonometrie : Methodes et Solutions, avec plus de 400 Exercices 



proposes; with 4: plates, 8vo. 25 (p. F. 5 nett) 1872 



7249 DESCARTES [Latine OARTESIUS] (Rene du Perron) CKuvRES Completes, publiees 

 par Victor Cousin; unth 45 foldiiig plates, and fs. letter, 11 vols. 8vo. calf gilt (very scarce), 

 £5. 5s ' 1824-6 



The best edition of the complete works, which has wholly superseded that of 1724-0. The last volume contains 

 Avorks which had not hitherto been translated into P'rench, and extracts from his MSS. 



7250 — Opera Philosophica, 5c. Meditationes de Prima Philosophia,etc.; Epistola ad Gisbertum 



Voetium ; Principia Philosophi.ie ; Dissertatio de Methodo ; Dioptrice ; Meteora ; Tractatus de 

 Passionibus Animte ; Ed. II. ab Auctore recognita ; ivith numerous woodcuts and diagrams, 4 vols. 

 4to. in 2, old hf calf gilt {some II. vater-stained, but a sound copy), £1. Is 



Amstelodami, Lud. Elzevir, 1654-50 



7251 Editio Ultima, nunc demum hac Editione diligenter recognita, et Mendis expurgata ; 



vith fine engraved portrait, and numerous voodcuts and diagrams, 4 vols. 4to. in 3, contemporary 

 stamped vellum {sound copy), £1. 1* ibidem, apud Danieleni Elsevirium, 1677-8 



The above copy has the ' Principia ' interleaved, with the addition of numerous M8. notes in a contemporary hand ; also 

 a presentation inscription by James Lockhart, of North Marston and Oving, Bucks, ' 7th iSept., 1841, anno at. meje 79'', 

 to John Alfred Lumb Airey, now at Christ's Hospital, as a testimony of my sense of his able resolution of three problems 

 which I proposed to British students '—the late Rector and restorer of St. Helen's, Bishopsgate. 



7252 — — - Specimina Philosophi/K : seu Dissertatio de Methodo rectc regenda? rationis, et 

 veritatis in scientiis investigandu' : Dioptrice, et Meteora, ex Gallico translata, et ab Auctore 

 perlecta, varii3([ue in loeis emendata ; with vignette on title, and mimerous voodcuts and diagrams, 

 4to. fine copy in contemporary vellum (rare)^ £1. 17* 6d ibidem, Lud. Elzevir, 1644 



I'lRST Latix Edition of the Discours ' (c. 2\o. 7-250 infra), by Etienne de Courcclles, revised by the author, and contain- 

 ing many additions by him. 



7253 — Epistol.e, partim ab Auctore Latino Sermone conscript?©, partim ex Gallico translat.i', 



in quibus omnis Generis Quajstiones Philosophical tractantur, et explicantur plurimas Difficultates 

 qua? in reliquis ejus Operibus occurrunt, editio Latina princeps ; ivith numerous woodcuts and 

 diagrams, 3 vols. 4to. in 2, sound copy in contemporary vellum (rare), £1. 15* 



ibidem, Dan. Elzevir, etc., 1668-83 

 ^ With inscription as above (No. 72.31) to the late Mr. Airey, pr. The third volume is often wanting, and rare. 



^254 Editio Altera, Partes I. et II. ; icith 71 umerous plates and other woodcuts, 2 vols. 4to. 



in 1, old calf, 15s Londoni, J. Dunmore et 0. Pulley n, 1668 



Containing the author's physical and mathematical correspondence with Hobbes, Fcrmat, Mersenne, de Roberval, 

 Henry More (Cambridge Platonist), etc., 'with many mathematical papers of Ferniat which did not appear in his Opera 

 Varia.'—Libri Catalogue. 



7255 Meditationes de Prima Philosophia ; his adjuncti sunt varia^ Objectiones Doctorum 



Vironim, cum Responsionibus Authoris : Epistola ad Gisbertum Voetium : Passiones 

 Anim^e — in 1 vol. sm. 4to. vellum {first title mounted), with bookplate of Mr. Henry lieeve, C.B., 

 8* Orf Amstelodami, Lud. Elzevir, 1654-50 



This work enlarges the author'.«! philosophic views, as originally outlined in the ' Discours'. 



