t 5*« 1 
FlamfteetFs $$tk Andromeda marked neb. in his Catalogue, ibid. Obfervations on 6 or 
Ptolemy’s andUl. Sleigh’s 17th Eridani, p. 205. Obfervations on Flamfteed’s 41 Tauri, 
p. 205. Obfervations on the z Q \ North of 53d Eridani and 47 Eridani, ibid. Obferva- 
tions on y Canis Majoris, p. 206. Obfewations on » <3 Geminorum, p. 206. Obfer- 
vations on | Leon is, ibid. Obfervations on ^ Leonis, ibid. Obfervations on 
25th Leonis, p. 207. Obfervations on Bayer’s . / Leonis or Tycho’s 16 Leonis. 
p, ibid. Obfervations on £ Urfae Majoris, ibid. Obfervations on n Virginis, p. 207, 
Obfervations on Bayer’s liar of the fixth magnitude, i° South of g Virginis, p. 208. 
Obfervations on the liar in the northern thigh of Virgo, ibid. Obfervations on 91 or 
92 Virginis, p. ibid. Obfervations on sc Draconis, ibid. Obfervations on Bayer’s ftar 
in the weft fcales of Libra, ibid. Obfervations on Ptolemy’s and Ul. Bleigh’s N° 6. 
of the unformed in Libra, p. 209. Obfervations on k Librae, ibid. Obfervations on, 
Tycho’s nth Libra, ibid. Obfervations on 33 Serpentis, p. 2\o, Obfervations on 
a ftar marked by Bayer near s Urfae Minoris, ibid. Obfervations on the p or Ptolemy’s 
and Ul. Beigh’s 14th Ophiuchi or Flamfteed’s 36th, ibid. Obfervations on Ptolemy’s 
13th and 1 8th Ophiuchi, 4th magnitude, p. 21 1. Obfervations on <7 Sagitarii, ibid. 
Obfervations on 0 Serpentis, ibid. Obfervations on Tycho’s 27th Capricorni, ibid. 
Obfervations on Tycho’s 22d Andromedas and o Andromedae, p. 212. Obfervations on 
Tycho’s 19th Aquarii, ibid. Obfervations of La Caille’s 483 Aquarii, ibid. Sup- 
pofed variations generally occafioned by miftakes of aftronomers, p. 213. Difficulties 
in ascertaining variations, p. 214. Lift of periodical ftars, ibid. Obfervations on 
the variable ftars in Hydra, p. 216. Obfervations on the n Antinoi, p. 217. Obfer- 
vations pn the variable in Cygnus’s neck, p. 218. Their twinkling appearance 
accounted for, p. 322. Hints ufeful in obferving the R.A. of ftars, p. 420. Cata- 
logue of one thoufand new nebulae and clufters of ftars, p. 457. Inftruments ufed 
in making thefe obfervations, ibid. The order obferved in the diftribution of the 
nebulae and clufters of ftars, p. 466. Arrangement of the columns and explanations 
of the abbreviations, p. 468. Tables of the obfervations, p. 471. 
Subfdence of the Ground, near Folkeftone, p. 220. The caufe accounted for, p. 223. 
Objections to Mr. Sackette’s account of a fimilar phenomenon, p. 226. 
Subfiances, on the affinities of, in fpirit of wine, p. 153. 
Sulphur , Liver of how made, p. 321. 
Sulphur Wells, at Harrogate, obfervations on, p. 171. Obfervations and experiments on 
the fulphureous impregnation of Harrogate water, p. 179. 
T. 
Telefaxes, method of difcovering the error of the line of collimation, p. 422. Hiftory 
of that of 20-feet madeufe of by Dr. Herfchel, p.458. Hints for the improvement 
«r, P . 505, 
Theodolites^ 
