368 INDEX. 



Colours. Periodical colours produced by the grooved surfaces of metallic and transparent 



bodies, 301 et seq. 

 Cooper (Bransby Blake, Esq.). Anatomical description of the foot of a Chinese female, 



255 et seq. 



D. 



Dai,ton (John, Esq.). Objections to Mr. Dalton's estimate of the height of the aurora 



borealis, 116. 

 Davy (Sir Humphry, Bart.). Experiments on the torpedo, 15 et seq. 

 Digestion. On the functions of the stomach in digestion, 137 et seq. 



Farquharson (Rev. James). On a definite arrangement and order of the appearance and 

 progress of the aurora borealis, and of its height above the surface of the earth, 103 

 et seq. 



Friction. Experiments on the friction of attrition of solids, 150 et seq. 



G. 



Galvanism. Its employment recommended in diseases arising from a failure of the nervous 

 power, 278. 



Electric and chemical theories examined, 361 et seq. 



Graves (John Thomas, Esq.). An attempt to rectify the inaccuracy of some logarithmic 

 formulae. 111 et seq. 



■ H. 



Hydrogen gas. Vibrations of a pendulum in hydrogen gas, 227 et seq. 



L. 



Lee (Robert, M.D.). On the functions of the intestinal canal and liver of the human 



foetus, \2\ et seq. 

 Lens {Jluid). Of 7.8 inches aperture, employed in a telescope, 33 et seq. 

 Light. Of Sirius and the Sun compared, 23. 



Experiments on reflected light, 187 et seq. 



M. 



Magnetism. Dip of the needle in London in 1 828, 52. 



Annual decrease of the Dip in London diminishing, 53. 



Mediterranean. More salt at great depths than the ocean generally, 30. 

 Microscopes. Observations on, 9 et seq. 



Nerves. On the functions of the nervous system, 261 et seq. 

 ——^ On the nerves of the face, 317 et seq. 



