INDEX. 
page 
Davy, Humphry, Esq. New analytical researches on the 
nature of certain bodies, being an appendix to the Bakerian 
lecture for 1808, - 45 q 
Diamond , its nature, - - - - - 73 
E 
Earle, Sir James. An account of a calculus from the human 
bladder of uncommon magnitude, - - 303 
Ellipsoids , homogeneous , of the different methods pursued by 
geometers to ascertain their attractions, - - 345 
Expectorated matter, on the sensible properties of that secreted 
by the bronchial membrane, - - 313 
how affected by different agents, - 322 
on the composition of different kinds, 34 1 
on the distinction between it and other 
secreted animal fluids, - 343 
F 
Fluid , a chemical analvsis of that contained in the interverte- 
bral cavity of the squalus maxirnus, - - 1 8 4 
Fluoric acid , on its decomposition, 95 
Foetus, human, an account of one, - - - 16 5 
G 
Gay Lussac and Thenard, their experiments on potassium 
controverted, - - - - - 47 
Gerstner, his experiments on the passage of water through 
tubes mentioned, - - - - 7 
Goniometer , reflective, its description, - 253 
Gregor, Rev. William. On a native arseniate of lead, 195 
H 
Henry, William, M.D. Experiments on ammonia, and 
an account of analyzing it, by combustion with oxygene and 
other gases, - 430 
H erschel, William, LL. D. Continuation of experiments 
for investigating the cause of coloured concentric rings, and 
other appearances of a similar nature, - 259 
Hindley. His method of dividing instruments noticed, - ll£ 
Home, Everard, Esq. On the nature of the intervertebral 
substance in fish and quadrupeds, - - 1 7 7 
Hints on the subject of animal 
secretions, - - - - - - - -385 
MDCCCIX. 3 Q 
