index. 
Gold, its colour when mixed with glafs, &c. p. 28. 
Griffith, Mr. of Pembroke College, Oxford, his account 
of the effcdts of a (form of thunder and lightning there, 
P- 273* 
H. 
Hadley s quadrant recommended for furveying harbours, 
and in fome cafes of pilotage, p. 70. 
Halley, Dr. his remarks about fixing the return of fome 
comets, p, 295. Concerning the ufe of parallaxes in 
obferving the tranfics of planets, p. 340. 
Hamilton, Hugh, D. D. his diflertation on the nature of 
evaporation, &c. p. 146. 
Heat, in what proportion decreafed by the height of 
fituation, p. 126. 
Heberden, Dr. William, his account of a fait found at the 
Pic of TenerifFe, p. 57. Of a ftone voided without 
help from the bladder of a woman at Bury, 128. 
Heberden, Dr. Thomas, his obfervations for fettling the 
proportion, which the decreafe of heat bears to the 
height of fituation, p. 126. 
Hemlock, green, fequel of the cafe of a perfon who had 
taken it, p. 271. 
Hope, Dr. John, his letter concerning the rhubarb root 
raifed in Scotland, p. 290. 
Hornjhy, Rev. Mr. his account of the tranfit of Venus, 
1769, p. 326. 
Humber, pilotage of the mouth of it, how might be aflifl- 
ed, p. 74* . 
Hydrophobia, cafe of a fuppofed one, falfly faid to be 
cured by vinegar, p. 139. 
I. 
Jaw locked, fuch a cafe, p. 85. Owing to a wound in 
the foot, 86. Obfervations on the nervous fyftem, 
87. 
Inoculation, 
