INDEX 
TO THE 
PHILOSOPHICAL TRANSACTIONS 
FOR THE YEAR 1824. 
A 
Academiciams , French, their experiments on the velocity of 
sound in 1638, and 1822, p. 426. — Annoyance experienced 
by them, as well as by Moll and Van Beek, 430. 
Acid in the stomach of animals, Dr. Prout on the nature of, 45. 
Air, in sea water, the cause of its corroding copper, 153. 
— effects of a variation of its density on the rates of chrono- 
meters, 372. 
— density of, compared with that of mercury, 427* 
formula for, at any temperature and pressure, 427. 
- — in the cavity of the chest, in a case of pneumato-thorax, its 
analysis, 259. 
Alkaline substances, deposited by sea water on negatively elec- 
trified copper, 244. 
solutions prevent the action of sea water on copper, 
245, 
Amici. His observations on the motion of the sap in the chara, 
an analogy with, 19 1, — his observations on double stars, 
Part iii. 3. 
Ammonia , its effect on explosive mixtures of oxygen and hy- 
drogen, when submitted to the action of the platina sponge, 
274. 
Ammonium. Its inertness when alloyed with mercury, in the 
production of electro-mechanical effects, 181, — separated by 
a definite character from the other alkaline bases, 181. 
