INDEX. 
page 
Conducting powers, relative of platiaa, palladium, silver, and 
copper, - 329 
Crimping of fish, experiments on, - - - 23 
Crystalline lens of the 'eye, probably muscular, - » 14 
D 
Davy, Humphry, Esq. An account of some analytical expe- 
riments on a mineral production from Devonshire, consisting 
principally of alumine and water, - 155 
On a method of analyzing stones con- 
taining fixed alkali, by means of the boracic acid, - 231 
Diameters, spurious, of terrestrial objects, - - 44, 51 
• differ according to the portion of mirror 
employed to view them, - - - - 52 
of celestial objects, - - 54, 55 
criterion for distinguishing spurious from real, 52 
Dragon s blood, experiments on, - 297 
E 
Elevation of fuids, by adhesion, - - - 70 
Expansion, comparative, of platina, palladium, and steel, - 329 
F 
Flinders, Matthew, Esq. Concerning the differences in 
the magnetic needle, on board the Investigator, arising from 
an alteration in the direction of the ship’s head, - 186 
Fluids , cohesion of, ----- 65 
G 
Gregor, Rev. William. Experiments on a mineral sub- 
stance, formerly supposed to be zeolite ; with some remarks 
on two species of uran-glimmer, - - - 331 
H 
Harding , Mr. his star observed by Dr. Herschel, - 57 
Hatchett, Charles, Esq. On an artificial substance, which 
possesses the principal characteristic properties of tannin, 211 
Additional experiments and re- 
marks on the same substance, - 285 
Heart, malformation of, in an infant, - - -22 8 
H erschel, William, LL. D. Experiments for ascertaining 
how far telescopes will enable us to determine very small 
