INDEX. 
Sedative salt , on the decomposition of. 
Sextans , on the stars in. 
Sheep , on its teeth, 
Shell, experiments and observations on, 
Shells , experiments on porcellaneous ones, - _ 
— experiments on those composed of Nacre or mother of pearl 
Sinuses, frontal, on tumors sometimes found in them, 
Starfish , experiments on, _ _ . . 
Stars, fourth catalogue of their comparative brightness, 
on those in Auriga 
■ Draco, 
Lynx, 
Lyra, 
page 
- 56 
13 1 . *4* 
252 
■ Monoceros 
• Perseus, 
Sextans, 
■ Taurus, 
Triangulum, 
Subsidence of the ground, remarks on. 
Sulphate of iron , on its use as a test for the gallic acid, 
Superfoetation of vegetables, remarks on, 
Sus JEthiopicus, on its teeth, - 
Sutton, in Lincolnshire , strata of a well dug there, 
Synovia, experiments on, - 
3<5 
317 
318 
239 
323 
121 
138 
138 
121, 
123, 
126, 139 
127, 140 
128 
129, 140 
13*5 141 
J 3 2 j 
i37» 
237 . 
142 
144 
*53 
261 
*97 
248 
148 
246 
132, 
205, 
Tanning principle , on the quantity contained in the bark of diffe 
rent trees, - 
Tapetum, lucid , remarks on, - - 
Taurus, on the stars in, - 
Teeth , on those of the Asiatic elephant, 
African elephant, 
— Sus ^Ethiopicus, 
horse, - 
— — —cow, .... 
— sheep, - 
— : — —hippopotamus, - - - 
— — — - — —rhinoceros, - 
Tennant, Smithson, Esq. On different sorts of lime used in 
agriculture, - - 
Testicles, on imperfections of them, - 
259 
3 
142 
237 
252 
237, 248 
251 
251 
252 
- 253 
253 
305 
165 
