418 HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 



THE RARE FIRST EDITION : 



8207 GALILEI (Galileo) DIALOGO dove ne i congress! di quattro giornate si discorre sopra i DUE 



diagrams, 4to. old Italian vellum (a number of II. browned as usual, but a SOUND AND VERY LARGE 



COPY) ; VERY RARE, 5. 5s Fiorenza, G. B. Landing 1632 



8208 ANOTHER COPY, contemporary limp vellum (back of binding slightly damaged, and 1 I. 



defective, otherwise a FINE AND VERY LARGE COPY), 4. 105 

 8209 ANOTHER COPY, boards, WHOLLY UNCUT (front, wanting, somewhat browned as usual, 



but a VERY SOUND COPY), 3. 13s Qd 



8210 THE SAME (also wanting the frontispiece), old Italian vellum ; or, old hf. russia (both 



slightly browned, but VERY SOUND COPIES), 3. 3s 



FIRST EDITION of this epoch-making work, a masterly defence of the Copernican system, but which led to its author's 

 imprisonment, and as has been stated his being put to the torture. 



The work having been rigidly suppressed, not only for its ' heretical ' views, but also for having offended Pope 

 Urban VIII. 's vanity, who believed himself satirised as the dull interpreter of the Aristotelian system, the first edition has 

 become EXCESSIVELY RARE. 



8211 SECOND A IMPRESSIONE, accresciuta di una Lettera dello stesso, non piu stampata, e di 



varj Trattati di piu Autori [per cura di CELLENIO Z ACCLORI] ; with vignette and numerous diagrams, 

 4to. old calf, rebacked, 10s Qd ibidem, 1710 



The second separate edition of the ' Dialogo ', having several letters, including that to the Duchess of Tuscany, added. 

 1 Raro.' Riccardi. 



8212 DISCORSI e DIMOSTRAZIONI MATEMATICHE, intprno & DUE NUOVE SCIENZE attenenti alia 



MECANICA & i MOVIMENTI LOCALI, con una Appendice del centro di gravita d' alcuni Solidi, 

 prima edizione ; with numerous fine woodcuts and diagrams, sm. 4to. old calf, rebacked (small 

 blank portion cut off title), with auto. ' W. Milton, 1795 ' on title (VERY RARE), 3. 3s 



Leida, appresso gli Elsevirii, 1638 



First Edition of one of the author's most important works, which did as much to lay the foundation of dynamics as 

 Stevinus's Beghinselen did that of statics (v. no. 4585, ante), and containing the first law of motion, his laws of falling 

 bodies (the result of experiments made from the Leaning Tower of Pisa between 1602 and 1604), demonstrating the 

 parabolic curves of projectiles (hitherto believed to move in a straight line and suddenly fall vertically to the ground), the 

 laws of cohesion, and of the pendulum, a correct definition of momentum, etc. etc. etc. 



8213 MATHEMATICAL DISCOURSES concerning Two NEW SCIENCES relating to MECHANICKS and 



LOCAL MOTION, in Four Dialogues. I. Of the Resistance of Solids against Fraction. II. Of the 

 Cause of their Coherence. III. Of Local Motion, viz. Equable, and naturally Accelerate. IV. Of 

 Violent Motion, or of Projects ; with Appendix concerning the Center of Gravity of Solid Bodies, 

 done into English from the Italian by THOMAS WESTON, and now published by JOHN WESTON, 

 with numerous woodcuts and diagrams, 4to. hf. brown calf neat, cl. sides (FINE AND LARGE COPY) ; 

 VERY RARE, 2. 10s J. Hooke, 1730 



The very rare English version of the Discorsi e Dimostrazioni matematiche, together with the ' Systeme of the World, 

 Inglished by Thomas Salusbury,' the only two of Galileo's works ever translated into English. 



8214 DIVISIONE della LINEA : delle OPERAZIONE del QUADRANTE ; a closely and neatly 



written Manuscript on 42 pages of writing paper, with diagrams, folio, hf. calf, 6. 6s Scec. XVII. 

 This valuable manuscript of one of Galileo's most 'important works is in a hand contemporary with the author, and is 

 illustrated with many fine diagrams. It was brought from Italy by Lord Guilford, and formed part of the great MS. 

 collection of Sir Thomas Phillipps, F.S.A. 



8215 ISTORIA e DIMOSTRAZIONI intorno alle MACCHIE SOLARI e loro Accidenti, comprese in Tre 



Lettere scritte a Marco Velseri, Linceo [e pubblicate da ANGELO de FILIIS] , prima edizione ; 

 with finely engraved portrait [by Villamoena~] , numerous engravings on copper, and diagrams, cr. 

 4to. hf. red morocco neat, uncut, t. e. g. (FINE COPY) ; VERY RARE, 3. 3s 



Eoma, Giacomo Mascardi, 1613 



8216 



LARGE COPY), 



bookplate ' P. __ , 



Containing Galileo's discovery of sunspots the priority of which is, however, claimed for Jan Fabricius but more 

 important still for the discovery, based on his observations, that the sun turns round its axis. For the first time h 

 avowed himself in the work a follower of Copernicus, which brought him under the suspicion of the Roman Curia, an 

 ended with his imprisonment after the publication of the Dialogo. 



8217 ALTRA EDIZIONE, s'aggmngono nel Fine le Lettere, e Disquisizioni del tinto Apelle ; wit 



finely engraved portrait, engravings on copper (including ADDITIONAL ONES), and diagrams, sm. 

 4to. old hf. vellum (a few slight water-stains, but a VERY SOUND COPY), 5. 5s 



ibidem, apud eundem, It 



This edition is exceedingly rare, and quite unknown to bibliographers. Even in Riccardi's copious list, of Galileo's works 

 only the first edition is mentioned. It differs considerably from the latter by having an appendix of 56 11., with adcliti 

 engravings, entitled : De Maculis Solaribus III Epistolte. De iisdem et Stellis circa Jovem errantibus, Disquisit 

 Marcum Velserum . . . Apellis post Tabulam latentis. Tabula ipsa aliarumque observationum delineatiombus su 

 expositis.' 



8218 Delle LINEE ARITHMETICHE e GEOMETRICHE del QUADRANTE per MISURAR con la Vis 



a neatly written Manuscript on 66 pages, with numerous pretty illustrations and diagrams, 

 folio, old limp vellum, 10. 10s Sac. X V11 > 



This valuable and finely written manuscript from the well-known collection of SIR THOMAS PHILLIPPS, F.S.A., w 

 contemporary with the author, and contains many fine diagrams. It differs considerably from No. 8214, and contaii 

 following pieces which are not in that volume : Operatione della Bussola : Como possiamo prendere in disegnp & m 

 una citta fuon di quella alia quale non ci possiamo approssimare per 300 pertiche : Come possiamo formar in 

 qualsivoglia figura rettilinea : Dichiaratione della parte di sotto dello strumento, ec. : Come con le medtt 

 possiamo dividere la circonferenza di un cerchio sin in XVI parti : Come si assetti di giorno i pezzi d artegiia 

 tirarli hi notte : Operatione della squadra di Bombardieri ; and many other pieces. 



The latter.part of the work is illustrated with drawings of artillery, etc. 



