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



JUST PUBLISHED AT 2. 105 NETT : 



9190 HERSCHEL (Sir [Frederick] William, F.RS.) SCIENTIFIC PAPERS, including EARLY PAPERS 

 HITHERTO UNPUBLISHED, collected and edited under the Direction of the Royal Society and the 

 Royal Astronomical Society, with Biographical Introduction compiled mainly from Unpublished 

 Material, by J. L. E. DREYER, with 3 portraits, and other plates, 2 vols. roy. "4to. boards 1912 



9191 ACCOUNT of the DISCOVERY of Two SATELLITES revolving round the GEORGIAN 



PLANET [URANUS] : Stanhope (Charles third Earl, F.R.S.) REMARKS on BRYDONE'S ACCOUNT 

 of a remarkable THUNDER-STORM in SCOTLAND, folding plate 4to. (pp. 26), sewn, 4s 1787 



Containing the discovery of two of the satellites of Uranus, here called the Georgian Planet, or Georgium Sidus a 

 compliment to King George the Third which did not survive the strenuous Toryism of the age. 



9192 ACCOUNT of some PARTICULARS observed during the late ECLIPSE of the SUN, 4to. 



(pp. 4), unbound, 2s 1794 



9193 of THREE VOLCANOS in the MOON, 4to. (pp. 4), unbound, 2s Qd 1787 



' One of the author's few illusory observations '. Miss Agnes M. Clerke. 



9194 CATALOGUE of DOUBLE STARS, with folding plate, 4to. (pp. 87), sewn, 5s 1784 



Herschel's second catalogue, containing 434 double stars. 



9195 CATALOGUE of 1000 NEW NEBULAE and CLUSTERS of STARS : INVESTIGATION of the 



CAUSE of that INDISTINCTNESS of VISION which has been ascribed to the SMALLNESS of the 

 OPTIC PENCIL 4to. (pp. 51), sewn, 4s 1786 



9196 CATALOGUE of a SECOND THOUSAND of NEW NEBULAS and CLUSTERS of STARS, with a 



few Remarks on the Construction of the Heavens, 4to. (pp. 42), sewn, Is Qd 1789 



Added is : Attempt to explain a Difficulty in the Theory of Vision, depending on the different Refrangibility of Light, 



by NEVIL MASKELYNE, D.D., F.R.S. (pp. 9) ; and Experiments on the Congelation of Quicksilver in England, by RICHARD 



WALKER (pp. 13). 



9197 On the CONSTRUCTION of the HEAVENS, with folding plate, 4to. (pp. 54), sewn, 5s 1785 



9198 DESCRIPTION of a FORTY- FEET REFLECTING TELESCOPE, with 19 copperplates by Basire 



(some folding] of the great telescope and its constructional details, 4to. (pp. 63), sewn, 7s Qd 1795 

 The forty-feet reflecting telescope ' proper ' was included in the Herschel grant of arms. 



9199 On the GEORGIAN PLANET [URANUS] and its SATELLITES, with folding plate, 4to. 



(pp. 15), sewn, 2s Qd 1788 



The ' Georgium Sidus'. 



9200 On the METHOD of OBSERVING the CHANGES that happen to the FIXED STARS ; with some 



Remarks on the Stability of the Light of our Sun, with CATALOGUE of COMPARATIVE BRIGHTNESS 

 for ascertaining the Permanency of the Lustre of Stars, 4to. (pp. 61), sewn, 5s Qd 1796 



Added are: Mr. Jones's Computation of the Hyperbolic Logarithm of 10 improved, by JOHN HELLINS, pr., F.R.S. 

 (PP- 7), 1796, and Maniere elementaire d'obtenir les Suites par lesquelles s'expriment les Quantites exponentielles et les 

 Fonctions trigonometriques des Arcs circulaires, par SIMON L'HUILIER, F.R.S. (pp. 24), '9u. 



9201 On the NATURE and CONSTRUCTION of the SUN and FIXED STARS, 4to. (pp. 27), sewn, 



8s Qd 1794 



' His theory of the constitution of the sun as a dark, cool body, surrounded by a shell of lucid clouds floating in a 

 transparent atmosphere, held its ground until past the middle of the XlXth Century.' Miss Agnes M. Clerke. 



Added is : Observations on the Theory of the Motion and Resistance of Fluids (Bakerian Lecture), by SAMUEL VINCE, 

 pr., F.R.S., with 3 plates (pp. 21), and Croonian Lecture on Muscular Motion, by SIR EVERARD HOME, K.R.S., with plate 

 (pp. 23). 



9202 On NEBULOUS STARS, properly so called, 4to. (pp. 18), sewn, 3s 1791 



9203 OBSERVATIONS on the PLANET VENUS, with plate, 4to. (pp. 19), sewn, 3s 1793 



'A pungent repudiation of Schroter's claim to the discovery of mountains in Venus'. Miss Agnes M. Clerke. 



9204 OBSERVATIONS of a QUINTUPLE BELT on the PLANET SATURN, with plate, 4to. (pp. 5), 



sewn, 2s 1793 



9205 On the PERIODICAL STAR a HERCULIS; with Remarks tending to establish the 



ROTARY MOTION of the STARS on their AXES ; with a SECOND CATALOGUE of the comparative 

 BRIGHTNESS of the STARS, 4to. (pp. 31), sewn, 6s 1796 



' Herschel discovered and assigned a period of 60 days to the variation of a Herculis '. Miss Agnes M. Clerke. 

 Added is : Observations on some Ancient Metallic Arms and Utensils, with Experiments to determine their Composition, 

 by GEORGE PEARSON, M.D., F.R.S., with 5 folding plates (pp. 57). 



9206 On the RING of SATURN, and the ROTATION of the FIFTH SATELLITE upon its Axis, 



with folding plate: ACCOUNT of a COMET 4to. (pp. 26), sewn, 3s 1791 



9207 On the ROTATION of the PLANET SATURN upon its Axis, plate, 4to. (pp. 19), sewn, 3s Qd 1794 



9208 On the SATELLITES of the Planet SATURN, and the ROTATION of its RING on an Axis, 



with large folding plate, 4to. (pp. 69), seivn, 8s Qd 1790 



' Containing the first determination of Saturn's rotation and polar compression.' Mm Agnes M. Clerke. 

 Added is : On Spherical Motion, by CHARLES WILDBORE, pr., with plate (pp. 64) : and On the Chronology of the Hindoos, 

 by WILLIAM MARSDEN, F.R.S. (pp. 25). 



9209 v. BENNET, no. 6175 ante. 



9210 HERSCHEL (Sir John Frederick William, F.R.S. ; son of the above) On the ADVANTAGES 

 to be Attained by a REVISION and RE- ARRANGEMENT of the CONSTELLATIONS, with especial 

 Reference to those of the SOUTHERN HEMISPHERE, and on the Principles on which such 

 Re- Arrangement ought to be conducted, with plate, 4to. (pp. 26), sewn, 5s 1841 



9211 On the CHEMICAL ACTION of the RAYS of the SOLAR SPECTRUM on PREPARATIONS of 



SILVER, and other Substances, both Metallic, and non-Metallic, and on some PHOTOGRAPHIC 

 PROCESSES, with 2 plates, 4to. (pp. 59), sewn (scarce), 10s Qd 1840 



This paper, which was awarded the Royal Society's gold medal, 'announced the use as a fixing agent of hyposulphite 

 of soda, the solvent power of which on the silver he had discovered in 1819 ; it originated the application to photographic 

 prints of the terms ' positive ' and ' negative ', adverted to ' lavender grey ' rays beyond the violet, and described 

 experiments on the 'chemical analysis of the solar spectrum,' by which an important new field was thrown open to 

 lesearch.' Afiss Agnes M. Clerke. 



9212 ESSAY, entitled the YARD, the PENDULUM, and the METRE, considered in Reference to 



the Choice of a STANDARD of LENGTH, 8vo. (.pp. 24), seivn, 2s Qd 1863 



