78 HENRY SoTHERAN & CO., 140, STRAND, W.C., AND 37, PlCCAbiLLV, W. 



A FINE INTERLEAVED COPY OF THE EXCESSIVELY RARE ORIGINAL EDITION : 



1526 GILBERT (William, M.D., Physician to Q. Elizabeth) : GVILIELMI GILBERT! Colcestrensis:, 

 Medici Londinensis, de MAGNETE, MAGNETICISQUE CORPORIBUS, et de MAGNO MAGNETE 

 TELLURE ; Physiologia noua, plurimis et Argumentis, et EXPERIMENTIS demonstrata ; with 

 vignette on obverse and arms on rev. of title, folding diagram, and numerous large woodcuts, folio, 

 interleaved with contemporary writing paper ; old vellum (back damaged), 25. 



Londini, excudebat Petrus Short, 1600 



THIS IS i'KOBABLY THE ONLY CONTEMPORARY INTERLEAVED COPY KNOWN TO EXIST. It bears Oil title the autogn-.pll 



of JOHANN HARTMANN (156S-1631), Professor at Marburg University, and the first professor of Chemistry in Germany 

 (giving evidence of the early appreciation of the work abroad), is unusually tall, measuring llf\ x 7 inches, and save for 

 the damaged back, and the title and a number of 11. being foxed, is in remarkably sound and line condition. 



The work itself is of well-known rarity. Prof. Silvanus Thompson, F.R.S., writing on the work in the 'Electrician' of 

 March 24, 1905, says, ' This book is much rarer than the first folio Shakespeare, for while of that tcorfc nofeiver than 156 copies 

 are known to exist, there are onlyQS copies of the first folio Gilbert known, and only two have been sold in the book-auctions during 

 the last twenty years.' The present offer of two tine copies of this work at reasonable prices therefore forms a unique 

 opportunity for any library or book-buyer desirous to acquire this truly monumental work. 



1527 - ANOTHER COPY, hf. calf neat (a few U. foxed, and some wormholes in blank margin, other- 

 ivise a FINE TALL COPY (11& x 7 inches), 19. 19s 



' Gilbert shall live till loadstones cease to draw.' Dryden. 



BOTH THE ABOVE ARE ORIGINAL EDITIONS OF THIS CELEBRATED WORK, wherein the author ' established the magnetic 

 nature of the earth, which he regarded as one great magnet, and conjectured that terrestrial magnetism and electricity 

 were two allied emanations of a single force a view which was only demonstrated with scientific strictness more than 

 two centuries afterwards by Oersted and Faraday. Gilbert was the first to use the terms ' electricity ', ' electric force ', and 

 'electric attraction', and to point out that amber is not the only substance which when rubbed attracts light objects, 

 but that the same faculty belongs to resins, sealing-wax, sulphur, glass, etc. ; and he describes how to measure the excited 

 electricity by means of an iron needle moving freely on a point' [the electroscope]. 



' His work contains all the fundamental facts of the science, so fully examined indeed, that even at this day we have 

 very little to add to them.' Dr. Wheivcll. 



1528 - On the LOADSTONE and MAGNETIC BODIES, and on the Great Magnet the Earth : a New 

 Physiology, demonstrated with many Arguments and Experiments; a Translation [with LIFE 

 (pp. 19)] by P. FLEURY MOTTELAY, with portrait and numerous woodcuts, roy. 8vo. cl., uncut 

 (SCARCE), 1. 5s 1893 



The only English translation. It contains fs. reproductions of the woodcuts in the first edition, and fs. title-pages of 

 the first four editions. 



1529 GILDEMEISTEB(Eduard) and Friedrich HOFFMANN: The VOLATILE OILS ; Authorised 

 Translation by EDWARD KREMERS, ivith numerous full-page and other illustrations (some from 

 old chemical works], and maps, roy. 8vo. (pp. 734), hf. morocco gilt, 8s Qd Milwaukee, 1900 



1530 GILL (Sir David, F.R.S., Cape Astronomer Royal], CATALOGUES of STARS, Royal Observatory 

 Cape of Good Hope: 4810 Stars for 1850, cl. ['83] : 1905 Stars for the Equinox 1865'0, cl. [1900]: 

 2798 Zodiacal Stars for the Epoch 1900, arranged for Differential Observations of the Planets, 

 sewn. '99 : 87 Southern Circumpolar Stars for 1882-0, sewn, Cape Town, '02 4 vols. roy. 8vo., IsQd 



1883-1902 



1531 CATALOGUE of 1713 STARS, for the Equinox 1885-0, from Observations at the Royal 



Observatory. Cape of Good Hope, 1879-85, with APPENDIXES : Catalogue of 104 Southern Circum- 

 polar Stars, and separate Observations of /3, a 2 and aj Ccntauri, impl. 4to. cl., 6s 1894 



1532 CATALOGUE of 3007 STARS, for the "Equinox 1890*0, from Observations at the Royal 



Observatory, Cape of Good Hope, 1885-95, with APPENDIXES : Comparison with other Catalogues, 

 Meridian Observations of a Canis Majoris, a Canis Minoris, /3 Centauri, a 1 and a 2 Centaur i, and 

 Positions of Southern Circumpolar Stars, impl. 4to. cl., 8s Qd 1898 



1533 - - DETERMINATION of the SOLAR PARALLAX, from OBSERVATIONS of MARS made at the 

 Island of Ascension in 1877, folding map, and 2 charts, 4to. cl. , 5s 1881 



1534 - ANOTHER COPY, boards, 4s 



These observations were taken on a plan recommended by Airy in 1857, and known as the diurnal method of parallaxes. 

 As a result the author found a solar parallax of 8.78", corresponding to a distance of D3,00,000 miles. 



1535 HELIOMETER OBSERVATIONS for Determination of STELLAR PARALLAX at the ROYAL 



OBSERVATORY, CAPE of GOOD HOPE, large Svo. cl., 4s 1893 



With ' Heliometer Comparison Stars,' C. G. //., 18!'S-li>00. 



1536 INDEPENDENT DAY-NUMBERS, 1897-1901, as used at the Cape Observatory, 4 parts roy. 



Svo. sewn, 2s Qd 1897-8 



1537 - RESULTS of MERIDIAN OBSERVATIONS at the ROYAL OBSERVATORY, CAPE of GOOD 

 HOPE, 1879-81, 2 plates, roy. Svo. cl., 5s [1884] 



1538 , and J. C. KAPTEYN, Prof. Astronomy, Groningen: The CAPE PHOTOGRAPHIC 



DURCHMUSTERUNG for the Equinox 1875, Parts I and II : Zones 18 to -52, with plates, 2 thick 

 vols. large roy. 4to. hf. calf gilt , 1. Is (p. 3.) 1896-7 



1539 - , Arthur AUWEBS, Berlin, and William Lewis ELKIN, Yale: DETERMINATION of 

 the SOLAR PARALLAX and MASS of the MOON, from Heliometer Observations of the Minor Planets 

 Iris, Victoria and Sappho, made in 1888-9, with plates and woodcuts, 2 thick vols. large roy. 4to. 

 hf. calf gilt, 1. 5s 1897-8 



1540 GIOBGrlUS (Mattheeus) ELEMENTA SCIENTIAL NATURALIS : Theoremata et ProLlemata 

 Physica, etc. etc. ; with diagrams, sm. 4to. vellum, with bookplate of Philip 2nd Earl Stanhope, 

 F.RS.,4s LUCK, 1707 



1541 GIRARD (Albert) INVENTION NOUVELLE en 1'ALGEBRE [Amst., 1629], Reimpression par D. 

 .BlERENS DE HAAX, with fs. title, and diagrams, sq. Svo. parchment wrapper, uncut, 

 6s Leiden, 1884 



' This contains the earliest use of brackets ; a geometrical interpretation of the negative sign ; the statement that the 

 number of roots of an algebraical equation is equal to its degree ; the distinct recognition of imaginary roots ; and 

 probably implies a'.so a knowledge that the first member of an algebraical equation <J> (r) o could be resolved into linoar 

 factors.' IF'. II'. R. J',.U. 



