INDEX. 401 
Copper, experiments on the acetates of, 383—385 _ 
_Copper-sheathing of ships, how prevented from corrosion, 253 9 
Cordilleras, on the hot-springs of, 143. Account of the different 
masses of iron which have been found n the eastern Cordillera 
of the Andes, 394, 395 ; 
Cow-Tree, memoir on the milk of, 142, 143 
Crotch (Dr.) syllabus of his course of lectures on music, 287 
Croup, sulphate of copper an excellent remedy in, 181 
Crystal, unequal dilation of, in different directions, 157. Differ- 
ence of crystalline forms of the same substance, zhid., 158 
Crystallization, supposed effect of magnetism on, 158. Of the 
sub-carbonate of potash, 167 
Dahline, discovery of, in the Jerusalem artichoke, 385 
Daniell (J. F., Esq.) observations and experiments on evapora- 
tion, 46—61. On the horary oscillations of the barometer, 
189. Review of his Metereological Essays and Observations, 335 
Davy (Sir Humphrey) on a new phenomenon of electro-magnetism, 
122, On the application of liquids, formed by the condensa~- 
tion of gases, as mechanical agents, 125, 126.. On the mode 
of preventing the corrosion of copper-sheeting by sea-water, in 
ships, 253—279—280 
Davy (Dr. John) on air found in the pleura, in a case of pneu- 
mato-thorax, 130, 263 
Debret (M.) experiments of, on the comparative advantage of cok 
and wood, as fuel, 361 
Dew, observations on some phenomena relating to the formation 
of, on metallic surfaces, 1—12 
Dillwyn (L. W.) observation of, on fossil shells, 129, 267 
Dipping-needle, general results of, 104, Experiments and ob- 
servations on the daily variation of the horizontal and dipping- 
needles, under a reduced directive power, 128, 129. 
Dobereiner (M.) on the capillary action of fissures, 151, 152. No- 
tice of his instantaneous light apparatus, 378, 379 
Dulong and Thenard (MM.) Experiments on the property which 
some metals possess, of facilitating the combination of elastic 
fluids, 132, 133 
Earthquake in Chili, account of, 383—46 
Electrical Machines, variation in the construction of, 161. Account 
of an electrical arrangement, produced with different charcoals 
and one conducting fluid, 174, 175. 
Electricity, connexion of phosphorescence with, 163. Electricity, 
on the separation of parts, 162. Electric light, 162. Observa- 
tions on a reciprocity of insulating and conducting action, which 
the incandescent platina of Davy exerts on the two electricities, 
369—372. Measurement of the conductibility of bodies for 
electricity, 376. Destruction of positive and negative electricity, 
377. Electricity produced by congelation of water, ibid, On 
