INDEX 
page 
E 
Eel , common, on its double organs of generation, - 140 
conger, on its double organs of generation, - - 140 
Electro-magnetism, on a new phenomenon of it, - - 153 
Electro-magnetic experiments, an account of an apparatus on 
a peculiar construction, for performing them, - 187 
Elephant , the structure of its membrana tympani compared 
with that of the human species, - 23 
Euchlorine, fluid, in what manner obtained, - - 194 
Eye , on its motions, in illustration of the uses of the mus- 
cles and nerves of the orbit, - - 166 
of the muscles and frame-work which are around the 
eye-ball, - - 166 
on the two conditions of it, its state of rest, and of 
activity, - - - - 177 
of its expression, and of the actions of the oblique 
muscles in disease, - - 181 
muscles of the, on their actions and natural classi- 
fication, - - . - 172 
experimental enquiry into their action, 175 
Eye-ball and eye~lids, their motions, - - 168 
F 
Faraday, Mr. on fluid chlorine, - 160 
on the condensation of several gases into 
liquids, - 189 
G 
Galapagos Islands, experiments made there with an inva- 
riable pendulum, - - - - 217 
Gases, simple mode of liquifying them by the application 
of heat, ----- - 2Q3 
Goldingham, John, Esq. experiments for ascertaining the 
velocity of sound at Madras in the East Indies, - 96 
H 
Hall, Captain Basil, R. N. Letter to Captain Kater, 
communicating the details of experiments made by 
him and Mr. Henry Foster, with an invariable Pen- 
dulum, in London ; at the Galapagos Islands in the 
Pacific Ocean, near the Equator ; at San Bias de Cali- 
fornia on the N. W. coast of Mexico ; and at Rio de 
Janeiro in Brazil. With an Appendix, containing the 
second series of experiments in London, on the return, .211 
