INDEX. 
page 
Cooper, Mr. Astley. Farther observations on the effects which 
take place from the destruction of the membrana tympani of the 
ear ; with an account of an operation for the removal of a parti- 
cular species of deafness, - 435 
Copper i Arseniales of, description of, - - - 169 
analysis of, - - - 193 
Copper ore, yellow bematitic , remarks on, - - 171 
— — analysis of, - - 202 
grey vitreous, remarks on, - - 173 
■ — • analysis of, - 203 
— - red octaedral, analysis of, - - 227 
Cornea, on its curvature, - - - - 53 
Corrugations of the Sun, observations on, - - 267, 287 
Crocodiles , remarks on their teeth, - - - 327 
Crystalline lens, on its refractive power, - - 41 
■ on its power to alter the focal distance of the eye, 64 
* — • on its structure, - - - 74 
D 
Davy, Mr. Humphry. An account of some Galvanic combi- 
nations, formed by the arrangement of single metallic plates and 
fluids, analogous to the new Galvanic apparatus of Mr. Volta, 397 
Deafness, operation for a particular species, - - 435, 439 
Dioptrical propositions , - 27 
E 
Ear, on the destruction of its membrana tympani, - - 435 
Electricity , experiments with, on the nerves, - - 17 
• on the chemical production and agency of it, - 427 
Elephant's tusk, account of one in which a spear-head was found, 165 
Eustachian tube , on the deafness caused by its obstruction, - 439 
Eye, on its mechanism, - 23 
on its dimensions and faculties, - 38 
on its accommodation to various distances, - 51 
on the structure of its crystalline lens, - - - 74 
— — on that of the rhinoceros - - 149 
F 
Fishes , remarks on their eyes, - - - 77, 79 
G 
Galvanic combinations, account of some - - - 397 
process, experiments on, - 427 
Gas, oxygen , its effects on spontaneous light - - 407 
azotic, its effects on spontaneous light, - - 409 
