SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 257 



32 [VENUSTI (Antonio Maria)] COMPENDIO UTILISSIMO di quelle Cose, le quali a Nobili e 

 Christian! MERCANTI APPARTENGONO ; with device on title, 12mo. old vellum (wanting 4 II., title 

 cropped, and some II. wormed), 1. Is Milano, 1561 



VERY RARE, and seemingly unknown to Mr. Richard Brown, who doss not mention it in his 'Bibliography of Book- 

 keeping'. It contains: Discorso della Mercantia; Trattato del Cambio di Bisenzone ; Esortatione a' Mercanti ; Institu- 

 tione de' Mercanti ; and Trattato de' Cambi in generate. 



5053 VERDAM (Gideon Jan) COMMENTATIO de COMPOSITIONE VIRIUM ; with 2 folding plates, 

 large 8vo., THICK PAPER ; sewn, uncut, 5s Qd Trajecti a. R., 1825 



This work was awarded a prize by the University of Utrecht. 



5054 VERDET (Marcel Emile) OSuVRES, publics par les Soins de ses Eleves ; with fine steel 

 portrait, and numerous woodcuts and diagrams, 8 vols. large 8vo. hf. calf mat (some titles stamped) ; 

 SCARCE, 4. 10s Imprimerie Imperiale, ou Nationale, 1868-72 



CONTENU: I. Notes et Memoires, avec Notice par A. A. DE LA RIVE: II. III. Cours de Physique, 2 v. : IV. Con- 

 ferences de Physique, publiees par U. GERNEZ, 2 parts : V. VI. Legons d'Optique physique, publiees par A. LEVISTAL, 

 2 v. : VII. VIII. Theorie mecanique de la Chaleur, publiee par J. C. PRUDHON et J. VIOLLK, 2 v. 



5055 LEMONS d'OPTiQUE PHYSIQUE, publiees par A. LEVISTAL ; with 186 diagrams, 2 vols. large 



8vo. brown prize calf extra (fine copy] ; SCARCE, 1. Is Imprimerie Imperiale, 18b9 



Containing an interesting history of the undulatory theory of light, also researches on double refraction, rotary polariza- 

 tion, etc. etc. ; with full bibliographies to each chapter. 



5056 THEORIE MECANIQUE de la CHALEUR, publiee par JEAN CHARLES PRUDHON et JULES 



VlOLLE ; with 111 woodcuts and diagrams, 2 vols. large 8vo. in 1, new hf. brown calf gilt, 12s 6 / 



apud eandem, 1868-72 



With copious bibliographies. 



5057 VERNON-HARCOTTRT (Leveson Francis, M.I.C.E.) HARBOURS and DOCKS : their Physical 

 Features, History, Construction, Equipment, and Maintenance, with Statistics as to their Com- 

 mercial Development, with 16 large folding plates, besides woodcuts, 2 vols. 8vo. cl. (VERY SCARCE), 

 1. 10s Clarendon Press, Oxford, 1885 



One of the best works on the subject. The author was professor of civil engineering in University College, London, one 

 of the Harbour Commissioners of Newport (Mon.), Sligo, and Poole, and did important work in India in connexion with 

 the improvement of the river Hugli for navigation. 



5058 SANITARY ENGINEERING, with respect to Water-Supply and Sewage Disposal, with 287 



woodcuts, 8vo. buckram, 9s Qd (p. 14s nett) 1907 



5059 - TREATISE on RIVERS and CANALS, relating to the Control and Improvement of Rivers, 

 and the Design, Construction, and Development of Canals, with 21 large folding plates (linen- 

 mounted), and 20 woodcuts, 2 vols. Svo. hf. morocco (titles stamped], 6s Qd (p. 1. Is) 



Clarendon Press, Oxford, 1882 



5060 VEBVEB (B., Maestricht) L'ECLAIRAGE au GAZ a PEAU a NARBONNE et I'ECLAIRAGE au GAZ 

 LEPRINCE, examines et compares ; with woodcuts, Svo. sewn, 3s Leide, 1858 



5061 VESCOVALI (Angelo) Sull' ACCRESCIMENTO della FORZA MOTRICE IDRAULICA, e sul Miglio- 

 ramento della Distribuzione delle Acque di Roma, 4to. (pp. 9), sewn, 2s Roma, 1858 



VICECOMES (Antonio Maria) v. VISCONTI. post. 



5062 [VIERO (Francesco)] DESCRIZIONE d'un APPARECCHIO di MACCHINE per CAVARE e MANEG- 

 GIARE le ARIE generalmente dette FISSE ; with 2 folding plates on copper, Svo. (pp. 48), sewn 

 (rare], 5s Bologna, 1788 



^ Interesting as describing new apparatus and giving rules for manipulating gases in the laboratory. 



5063 VIETE [latine VIETA] (Fra^ois) OPERA MATHEMATICA, Opera atque Studio FRANCISCI A 

 SCHOOTEN ; with numerous diagrams (a few with moveable slips), folio, old white vellum (VERY 

 FINE COPY), with Prof. Riccardi's booklabel (RARE), 2. 2s Luyd. Batav., B. et A. ELZEVIR, 1646 



ISAAC BARROW'S ANNOTATED COPY: 



5064 ANOTHER (? LARGE PAPER) COPY, contemporary English calf (rebacked), with old auto. 



'J. Hawkins 1. 4. 4', and that of Isaac Barrow, with very numerous MS. problems, 

 solutions, and quotations in the latter 's very neat handwriting 1 , 10. 10s 



OF GRKAT INTEREST AS HAVING BEEN THE WORKING COPY OF THAT GREAT MATHEMATICIAN AND THEOLOGIAN ISAAC 

 BARROW, D.D., THE TEACHER OF SIR ISAAC NEWTON. 



' Belle edition '.Brunei. 



In his most important work, In Arlem, ' the earliest work on symbolic algebra ', he ' introduced the use of letters for 

 both known and unknown (positive) quantities, a notation for the powers of quantities, and enforced the advantage of 

 working with homogeneous equations . . . One of his improvements was that he denoted the known quantities by the 

 consonants B ? C, D, etc., and the unknown quantities by the vowels A, E, I, etc., the other was to introduce new symbols 

 to represent the square, cube, etc. of quantities which had already occurred in the equations . . . These two improve- 

 ments were almost essential in any further progress in algebra. . . . Vieta's works on geometry are good. He applied 

 algebra and trigonometry to help him in investigating the properties of figures ', etc etc. etc. W. W. R. Ball. 



' The greatest mathematician of the Sixteenth Century '. Thomas Fowler, pr. 



5065 De NUMEROSA POTESTATUM ad Exegesim RESOLUTIONS, ex Opere restitutse Mathematics 

 Analyseos, seu, Algebra nova, editio princeps, folio (pp. 72), with vellum wrapper from XV. 

 Cent. MS. in gothic characters (VERY RARE), 1.5* Parisiis, D. Le Clerc, 1600 



' Dealing with numerical equations. In this a method for approximating to the values of positive roots is given . . . 

 The principle is similar to that of Newton's rule.' IF. W. R. Ball. 



5066 ZETETICORUM Libri V ; with diagrams, folio (pp. 47), old vellum wrapper (no title) ; RARE, 



15s s. 1. aut. t. n. 



This edition is unknown to bibliographers, the first of 1593 consisting of only four books. The work deals with the 

 solution of equations. 



5067 VIGENERE (Blaise de, Bourbonnois)TRAiCTK du FEU et du SEL. Excellent et rare Opuscule, 

 trouve parmy ses Papiers apres son Deces ; with engraved vignette on title, 4to. old hf. calf gilt 

 (slightly water-stained) ; RARE, 1. 5s 1618 



This work contains the first description of crystallised benzoi'c acid. ' On y trouve une recette pour faire de Tor.' 

 Biogr. Gen. 



The above is the FIRST EDITION, the date of which is given as 1608 in Biogr. Gen. a. palpable mistake as the Privilege is 

 dated October, 1617. There were reprints in 1642 and 1651, both of which are also rare. 



