INDEX. 
S. 
Salt^ a fort of it found on the Pic of Teneriffe, p. 57. 
It appears to be the nitrum of the ancients, or the folhl 
alkali, 58. Difference between that and vegetable 
alkali, 59. Salt applied to the bite of a raule-fnake, 244. 
SeaW ater, cafe of a young lady who had drupk it with no 
good effed, p, 6. Queries concerning the ufeofic, 
efpecially by thin, tender, and hedlical conftitutions, 8. 
Short, Mr James, communicates to Dr. Birch Mr. Dollond’s 
letters, p. 54. 
Silver, its colour when mixed with glafs, &c. p. 18, 31. 
Snow and Hail, how produced, p. 163. 
Solution obfervations thereon, p. 153. 
South-Sea, what land already difcovered there, and proba- 
bility of more, p. 334. 
Spa-Water, experimental enquiry into the mineral fpirit 
contained therein, p. 218. * 
Sponges, of their nature and formation, p. 280. The 
worms found in them, not their fabricators, but inhabi- 
tants, 281. They have an animal aftion, or fy ftole 
and diaftole, 284. Approach to the Alcyonium, 285. 
Spry, Dr. of Totnefs, his improvements of a portable baro- 
meter, p. 83. 
Stars, their right afcenfions and declinations, p. 321. 
Styles, Sir John Eyles, his account of fome new microfcopes 
made at Naples, p. 246. His Letter concerning the 
fexes of plants, 258. 
Stone, account of one voided without help from a woman’s 
bladder, p. 128. 
T. 
’Telefcopes, an improvement in the objed-glaffes of them, 
by Mr. Peter Dollond, p. 55. 
'Theorems, two, by Edward Waring, M. A. Lucafian pro- 
felfor of mathematics at Cambridge, p. 143. 
Thunder and Lightening, account of the effedfs of it in 
Pembroke College, Oxford, June 3, 1765, p. 273. 
Tijfot, his letter to Dr. Baker, concerning difeafes which 
arife from ill-afiedled rye, p. 108. 
4 
Vegetables, 
