THE Prefident and Council of the Royal Society adjudged, 
for the laft Year, 1783, Two Medals on Sir Goprrey 
CopLey’s Donation; One to JoHn Goopricxe, Efg.. 
for his Difcovery of the Period of the Variation of Light 
in the Star Algol; and the other to Tuomas HuTcuins,. 
E({g..for his Experiments to afcertain. the Point of Mercurial. 
Congelation. 

Ek @ 42 7 & 
Page. Line. 
117. 7+ for canon read cannon 
164. 9g. for not read nor 
18x. 8. for called read call 
211. 7. for Tweed read Clyde 
224. 4. for of read or 
