HENRY SOTHERAN & CO., 140, STRAND, W.C, and 37, PICCADILLY, W. 51 



991 DELAFOSSE (Gabriel) Rapport sur les Progres de la Mini^:ralogie, impl. 8vo. sewn^ 

 2s Impr. Impel'., 1867 



992 DELAMAINE [the Elder] (Richard) Grammelogia, or the Mathematicall Ring, showinj;- 

 (any reasonable Capacity that hath not Arithnieticke) how to resolve anil worke all 

 ORDINARY OPERATIONS of Arithmeticke, and those which are most ditiicult with greatest 

 facilitie : the extraction of Roots, the valuation of Leases, etc. the mejusnring of Phiines and 

 Solids, witli the RESOLUTION of Plain E and Sphericall Triangles, and that onely by an 

 Ocular Inspection, and a Circular Motion, with folding plate, and engraved diagrams, 12nu). 

 (pp. 30) sewn (very rare), £2. 5* J. Havilaml, 1630 



This rare edition is not noticed by the author's biographer in D.N.B. The only edition contained in Hrit. Mus. is that 

 of 1031, with a dillcrently worded title. The work is intended to express ' the speech in lines ' in imitation of Napier's 

 ' Rabdologia ', and contains an attack on W. Oughtred. 



993 The Making, Description, and Use of a Small Portable Instrument for the 



Pocket (or accordino; to any Ma^'iiitude) in form of a niixt Trapezia, thus called a HORIZONTALL 

 Quadrant, with engraved title, fine copperplates on movable slips, and looodcut diagrams, 12mo. 

 contemporary calf (FINE COPY), with bookplate of Philip 2na Earl Stanhope, F.Ii.S. (rare), 

 £1. 15* W. Leake [1631] 



presentation copies from TALLEYRAND : 



094 DELAMBRE (Jean Baptists Joseph, de I'Institut) Astronomie Tiieorique et Pratique ; 

 irith 'l\i folding vlatcs, 3 vols. Aio. contemporary hf. calf; presentation copy from Talleyrand 

 to the Duke oi Gloucester, with Sandhurst College bookplate, \7s Qd 1814 



' Given tothe Duke of Glmicester at Paris by Prince Taleyrand [aic] Feb 7. 1S1!».' — Inter, on flyleaf. 



' Un eiiclmineiUKnt lUs plus heureux y rend facile et |)res<iue j)opulairo rintcUigence des resultats les plus sublimes ; 

 chaque page y porte renipreintc de I'invention et du genie, et I'entendenient se r^cree et se delasse h. suivre dann son 

 fuiseuible cette s^rie de fonnules elegantes, de demonstrations ingc^nieuses qui n'apiwrtiennent qu'i I'auteur.'— /''o«ner. 



995 Hlstoire de I'Astronomie; with fine portrait by Desmonlins, and plates, COMPLETE 



in 6 vols. 4to. contemporai-y hf calf, presentation copy from Talleyrand to the Duke of 

 Gloucester («* above) ; RARE, £7. 1817-27 



CoNTENU : Astronomie Ancienno, 2 v., '17 : Astronomie du Moyen Age, '19 : Astronomie Mo<lerne, 2 v., '21 : Astronomie 

 au XVI lie Sifecle, publid jwir C. L. Mathieu, '27. Tliis important work is the first history on a strictly scientific basis, freed 

 from all mytliological conceptions and errors that had hitherto disfigured all similar works, and showing chronologically 

 in a masterly manner the steady advance of the science. 



996 : Tables Astronomiques publides par le Bureau des Longitudes de France, I® Partie : 



Tables du Soleil, par M. Delambre. Tables de la Lune, par M. Biirg, '06 : He Partie. 



NouvELLES Tables de Jupiter et de Saturne, par M., Bouvard. Nouvelles Tables ecliptiques 

 des Satellites de Jupiter, par M. Delambre, '08 : Tables Ecliptiques des Satellites de Jupiter, 

 piir M. Delambre, '17 — H vols. 4to. in 1, contemporary hf calf presentation copy from 

 Talleyrand [as above), I2s 6d 1806-17 



997 Mi^:thodes Analytiques pour la Determination d'un Arc du Meridien, pr^ceddes 



d'une Memoire sur le meme sujet par A. M. Legendre; with 2 plates, 4to. sewn, uncut, 12* 6c^ 



An r//(1799) 

 Appinted by the French Government, the author measured In 1792 the arc of the meridian between Dunkirk and 

 Barcelona, which was completed in 1799 by Laplace, etc., and served as the basis of the metric system. 



998 Rapport Historique sur les Progri^is des Sciences Mathematiques depuis 1789, et 



sur leur etat actuel, 8vo. boards, ivith Prof Williamsoii's auto., 5s 1810 



999 Tables de Jupiter et de Saturne, 4to. sewn, uncut, 7s 6d 1789 



, First Edition of the author's first published work. ' These tables were found to surpass greatly in accuracy those of all 



prece<Jing astronomers'.— /'/-o/. U. (Irant. 



1000 , et Pierre Fran9ois Andre M^CHAIN : Base du Systeme Metrique Decimal, ou 



Mesure de I'Aic du Meridien compris entre les Parall^les de Dunkerque et B«arcelone, executde en 

 1792 et Annees suivantes ; with numerous folding plates, 4 vols. 4to. contemporary calf gilt (binding 

 of V. IV not quite uniform and joint cracked otherwise a sound and large copy) ; RARE, £3. 10« 1806-21 



Tlie account of the imjMrtant meridian measurement which served as basis for the metric system. 



'81 Ton considere I'imjKjrtance du sujet, les questions d'astronomie, de geographic et de physique qu'il fut n^cessaire 

 dc trailer, les noms celebres des savants fran(.'ais ou etrangers qui concoururent k cet examen, les consequences capitales 

 et durables de ce travail, on pent dire qu'aucune autre application des sciences n'est comparable k celle-ci, et n'offrc le 

 meme caractere d'exactitude, d'utilite et de grandeur '.—Fo«ner. 



1001 DELAMOTTE (Philip Henry, f.s.a.) The Practice of Photography : a Manual for Students 

 and Ani;U<Mirs, with caloiypc jyortrait taken by the collodion process, post 8vo. cl. boards {scarce), 

 \Qs Qd 1853 



The first handy-l)ook of photography. It contains a full account of the collodion proce.ss on glass, and a number of 

 recipes then in use for all photographic processes. 



1002 DELAUNAY (Charles Eugene) Rapport sur les Progres de I'Astronomie, impl. 8vo. 

 sewn, \s(ul 1867 



1003 Traite de MecaniqUE Rationnelle ; with 126 woodcuts and diagrams, 8vo. hf calf 



neat. As , 1856 



1004 Quatrieme Edition ; with 116 diagrams, 8vo. hf morocco (out of print), Qs 1866 



1005 DELAY AL (Edward Hussey, f.r.s.) Experimental Inquiry into the Cause of the Changes 

 of Colours in Opake and Coloured Bodies, with Historical Preface, 4to. sewn {rare), \0s 6c? 1777 



Including the author's 'Exi)eriments and Ob.servations on the Agreement between the Specific Gravities of the several 

 Metals, and their Colours when united to Glass, etc' 

 DELUC (Jean Andre)— v. Luc, post. 

 DE MORGAN (Augustus)— v. MORGAN, joo*^. 



1006 DEMPSEY (G. Drysdale, ce.) The Builders' Guide in Materials and Construction, 2nd Ed., 

 with Supp'enient and Appendices, 230 wooodcuts, 8vo. cl., 4s (p. £1. 1^) 1857 



4 * 



