1815.) the Gases by different Bodies. 343 
Volume of gas 
‘Liquids. Sp. Gr. uthorbéed. 100 parts of the solution contain 
—_—_—_——_—_-- _—— ———e 
Sagar on... .cs--seeaes 1-104 0°72 25 sugar. 
EIT alsin’ cincin i nnaiys 1-047 O7 9°14 cr. al, Sat. sol. 
Sulphate of potash....} 1-077 0°62 9°42 c.s, Sat. sol. 
Muriate of potash ....] 2168 0°61 26c.s, Sat. sol. 
Sulphate of soda......| : 1:105 0:58 11°14 % ss, Sat. sol. 
2 aR aay ep 1-139 0°57 20°6 c.s. Sat. so}, 
Nitrate of soda ...... 1-206 0-45 264c,s, Sat. sol. 
Sulphuric acid ........ 1:84 0°45 
Tartaric acid ..,......| 1°285 0-41 53°37 c. acid. | Sat. sol. 
Common salt ,......- 1-212 0'329 29s. Sat. sol. 
Muriate of lime ...... 1-402 0-261 40°2 salt driedinared heat. Sat, 
eb sol. 
Influence of Viscidity.—When a liquid body passes into the state 
of a solid body quite filled with matter, or having all its sensible 
pores filled up, it loses the power which it had of absorbing gas in 
a liquid state. Viscidity, therefore, is nothing else thana more or less 
complete transition from a liquid to a solid state. It is to be pre- 
sumed, therefore, that the different degrees of liquidity will always 
have an obvious influence on the condensation of the gas. But how 
important soever this conclusion may be at the limit between solidity 
and liquidity, it has but very little influence, according to my ex-. 
periments, in theaniddle states of liquids of different kinds. Thus 
we see that the fat oils, though much less liquid, absorb a much. 
greater portion of carbonic acid than water. ‘The absorption, like- 
wise, of carbonic acid by gum and sugar water, exceeds in quantity 
that produced by the much more liquid solutions of sulphate of soda 
and muriate of potash. The solutions of muriate of potash, sal- 
ammoniac, and nitre, possess as much, or nearly as much, liquidity 
as pure water; yet this last liquid absorbs a much greater proportion 
of carbonic acid gas than they do. On the other hand, we find 
likewise liquids which absorb more of this gas than others possessed 
of smaller liquidity; as is the case, for example, with alcohol and 
ether when compared with water, and with this liquid when com- 
pared with several saline solutions. 
Though the influence of the viscidity of a liquid upon the great- 
ness of its absorption appears to be small, yet it is striking, as far as - 
the time is concerned which is required that the liquid may be fully 
saturated with the gas. Viscid liquids, as the fat oils, the solution 
of muriate of lime, gum-water, &c. require, supposing their power 
of absorbing the same, a much longer time to be saturated with a 
gas than the more perfect liquids, such as water, naphtha, alcohol, 
ether, and the essential oils. 
Influence of Specific Gravity.—The density of liquids appears to 
have a great influence on their power of absorbing gases. My ex- 
periments, as stated in the preceding table, show that in general 
» The salt was dried in a red heat, 
