INDEX. 
page 
Corundum stone, on that supposed to be found in America, - 322 
• on that supposed to be found in France, - 323 
analysis of, - - - - - 3 27 
• analysis of its matrix, - - 333 
- — analysis of some substances contained in its matrix, 334 
Cotes , remarks on a theorem of his, - - 107 
Crystal , Iceland , on its oblique refraction, - - - 381 
Crystalline lens , on the power of the eye, when deprived of it, - 1 
D 
D'Alembert , remarks on a paradox mentioned by him, 
Darracq , remarks on some experiments of his, 
Dispersive powers , method of examining, 
on those of the eye, 
Drake , remarks on its organs of generation, 
E 
Earths , on the affinity they have been supposed to have 
other, - 
Emerald , oriental , remarks on, 
Emeralds , on some found in France, 
Emery , on its composition, - .. 
Eslinger , Mr. remarks on his description of the spinelle, 
Ether , remarks on that of Sir Isaac Newton, 
Eye, on its power to adjust itself to different distances, 
on its dispersive powers, 
F 
Felspar , remarks on, - 
analysis of, 
Fibrolite , remarks on, ~ 
analysis of, - 
100 
340 
3 6 5 > 372 
39 6 
- 3 6 1 
for each 
3 2 7j 339 
244 
3 2 5 
- 39 8 
308 
H 
- 39 6 
- 285, 301 
- 334? 336 
289, 302 
335» 336 
G 
Garnets , remarks on, - 
Guyton de Morveau , remarks on some experiments of his. 
2 97 
339 
H 
Hatchett, Charles, Esq. An analysis of a mineral substance 
from North America, containing a metal hitherto unknown, - 4^ 
Flauy , Abbe. Remarks on some opinions of his respecting the co- 
rundum stone and the sapphire, - - 239, 276 
Heat, remarks on, - - _ _ 
- — -- some remarks on, and on. the action of bodies, which intercept it, 403 
