INDEX. 
page 
Potash , on its sub-carbonate, - 97 
on its super-sulphate, - 98 
on its super-oxalate, - 99 
_ on its quadroxalate, - - - 99 
Potassium , the name given to the metal existing in potash, 32 
Presents , list of those made to the Royal Society, from Novem- 
ber, 1 S 07 , to July, 1808, - 530 
R 
Reeve, Dr. Henry. His account of cretinism, - 111 
Respiration , on the changes produced in atmospherical air and 
oxygene gas by it, - - - - 249 
conclusions concerning its nature, - 281 
Ri gh ardson, Dr. His letter on the basaltic surface of Derry 
and Antrim, - - - - - 187 
Rocks , basaltic, on the alterations they have undergone, 187 
S 
Salts, on superacid and subacid, - - 96 
Satellites , Jupiter's, tables of their eclipses. - 326 
Saturn, an account of a new irregularity lately observed in its 
apparent figure, - - - I59 
Silex, experimentss made with a view to its decomposition, 349 
Smithson, James, Esq. On the composition of the com- 
pound sulphuret from Huel Boys, - - 55 
Soda, properties of its basis, - - - 21 
its composition, - 28 
on its subcarbonate, - - - - g8 
Sodium, the name given to the metal existing in soda, - 32 
Spleen , on its structure and uses, - - 45 
farther experiments on, - 133 
Strontites, experiments on its decomposition, - 42 
its decomposition, - - - 339 
Sugar , on its composition, and the formation of oxalic acid, 90 
Sulphuret of lead, antimony, and copper, on its composition, 55 
T 
Theory, chemical views respecting it, - - 3 95 
atomic, speculations upon, - - 102 
phlogistic, capable of being defended, - 33 
Thomson, Dr On oxalic acid, - - oj 
Triangle plane, on a new property of the tangents of its ngles, 120 
