▼I CONTE N T S. 
VII. An Extra A of the Regifler of the Parifi of Hofy Crofs y 
Salop, being a Third Decade of Tears from Michaelmas 
1770 to Michaelmas 1780, carefully digefed in the following 
table . By the Rev. Mr. William Gorfuch, Vicar ; communi- 
cated by Dr. Price, F. R . S. p. 53 
TUI. An Experiment propofed for determining , by the Aberration 
of the fixed Stars, 'whether the Rays of Light, in pervading, 
different Media, change their Velocity according to the Law 
which refults from Sir Ifaac Newton’s Ideas concerning the 
Caufe of Refraction ; and for afcertaining their Velocity in 
every Medium whnfe refractive Dcnfty is known. By Patrick 
Wilfon, A. M. Ajffant to Alexander Wilton, M. D. Pro - 
fefjor of Practical Afronomy in the Univerfty of Glafgow ; 
communicated by the Rev. Nevil Matkelyne, D. D. F. R. S. 
Afronomer Royal. p. 58 
IX. Quantity of Rain which fell at Barrowby near Leeds.. 
By George Lloyd, Efcj . F. R.S. p. 71 
X. Account of an improved Thermometer. By Mr. James Six ;; 
comunicated by the Rev. Mr. Wollafton, F. R.S. p. 72 
XI. On the Parallax of the Fixed Stars. By Mr. Herfchel, 
F. R. S. ; communicated by Sir Jofeph Banks, Bart. P. R. S. 
p. 82 
XII. Catalogue cf Double Stars. By Mr. Herfchel, F. R. S. 
communicated by JDr.TWatfon, fun. p. 1 1 2 
XIII. Defer iption of a Lamp-Micrometer, and the Method of 
ufng it. By Mr. William Herfchel, F. R. S. p. 163 
XIV. A Paper to obviate fame Doubts concerning the great Mag - 
nifying Powers vfed. By Mr. Herfchel, F. R. S. p. 173. 
XV. Continuation of the Experiments and Obfcrvations on the 
Specific Gravities and Attractive Powers of various Saline 
Subfances . By Richard Kirwan, j Efq, F. R. S. p. 179 
7 XVI. 
