BIBLIOGRAPHY OF HEKSCIIEL's WRITINGS. .);>1 



Herschel, W.: Synopsis ok the Wimtixus ok— Contiiiucd. 



A. D. Yvl. r. . r,., , -.. xTi I- i\ 1-an 



17U;3 8:3 204 The observations aiul .Irawiii.^s (onc'j;ivcn in 1 late \\11, U% 1), 1_"^", 



Till..' 1() -n "■$ •-'4 2;') o(; .28, 2i) ".'.O, and July :?, sliowcd that JeH»« 



lias a mot ion on licraxi^, and as evidently that she has an atmosphere. 



206 1769, Nov. 'M: no satellite visible; if she has one it must be beh.w ^ 



or 9 magnitude. 

 200 Two measures of the diameter, 1791, Nov. 24. 



215 My observations show that the at mosphere of Vaius is of nuuh -reater 

 cxteutorrefraetivepowerthan as given in the paper [of SriiuoK/rKK.] 



21t>> As to the mountains in Venus, I may venture to say that n.. eye whudi 

 is not considerably better than mine, or assisted by nuuh better in- 

 struments, will ever get a sight of them. 



217 The diameter of Vinus at the mean distance of the earth is l-^"./.». 

 21S The appearauce of the luminous border of Vvunn as I liav.' describe.l 



it, i. e.,mddenly much hrUjhUraU around Iht limb, has not b.'en notiee.l 

 by the author wo have referred to. 



218 The cause of this appearance may probably be ascribed to the atmos- 



phere of Venus, which is pr(d)ably replete with matt.-r that relleets 

 and refracts light copiously. Ther.don- on the border, where we 

 have an obli.iue view, there will be an increase of this app.-arance. 



1794 84 28 Observathus of a quintuple belt on the Planet Saturn. By William 

 HERSCilKL, LL. D., F. R. S. Eead December 19, 1.93. 

 28 In some of my tbrmer papers I have established the «Pl--''^>^='' J?;;" 

 of Saturn and pointed out the motion ot a spot on is disc iron 

 the first we infer a rotation ..n its axis; the sec<.nd shows that it 

 has such a motion. . , ,. . .• ;. 



My late observations seem to hint to us that the period ot n.tation is 



uot of long duration. 

 28 Observations of the <iuintuple belt; see Plate \ I, hg. 1- 



30 Observations of belts on Jupiter; see Plate VI, hg. ~, t'^^ • • 



3 Belts are connected with the rotation of the planets. ..nee h.n t 

 appears that the belts of Saturn are very inunerous, ^'^ *^ "^! "^ 

 ^!piter, and arc also placed iu the direction of the loiiges Oia^ua r 

 of the planet, it may not be without some reason that . nf^^ e 

 period of the rotation of the former to be short like that ot the 



latter. „ 



31 I have never seen parallel belts on Mars nor on fenus. 



1794 84 39 Aceount of some particulars .^serred duri^o tbelat.^ f^^^^^;!'^^";: 

 ^^•"^ i:i7.r3, September 5.] By William Hekschel, LL. D., 1 • K. fe. 



Kead January 9, 1794. 



amount to 1''. i .neasured the heights of about 100 



41 [Foot-note.] In 17/9, 1780 1/81, i n*^-^^ ,uethods. Some of these 

 mountains ofthe moon by three dtleicnt met lous. 



[Dated] Slough, near Windsor, Dec. 30, 1793. 



