Cy Oy GN. han eae) a ae 
VI. The Ufe and Defeription of a new-invented Inftrument 
Jor Navigation, by which every Cafe in plane, mrddle 
Latitude or Mercator’s Satling may be performed without 
Logarithms, Tables, or any numerical Calculations what- 
Joever. By Fohn Cooke, Efg, M.R.L. A. - - Page 117 
Vil. Obfervations made on the Difappearance and Reappear- 
ance of Saturn’s Ring in the Year 1789, with fome Re- 
marks on his diurnal Rotation. By the Rev. H. Usfher, 
D.D. MRA. AL and F.RS, | - : - agg 
VIL. Account of two Parhelia obferved February 25th, 
1790. By the Rev. H. Usfher, D.D. M.R.I. A, and 
FLRS. - - - - - - 143 
IX. An Effay towards afcertaining the Population of Ireland. 
Ina Letter to the Right Honourable the Earl of Charle- 
mont, P.R.I.A. By Gervafe Parker Bufhe, E/q; 
M.R.I. A. - - - - - 145 
X. Lettre de Monf. Pouget 2 Monf. Kirwan, F.R.S. & 
MRL. A. fur les Condenfations produites par P Alliage 
de [ Alkool avec l Eau - - - - 187 
