EXPERIMENTS OP GASES ABSORBED BY WATER. $35 



of water had, therefore, only given up .02 of a meafure, or 

 about T-^-y of its bulk. I apprehend, however, that the whole: 

 of the common air was not, even thu% extricated from the 

 water. In experiment 6, the 3 refiduary meafures contained 

 \ of common air. 



To judge of the influence of temperature, it is effential that Carbonic acid is 

 the experiments compared mould be on fimilar proportions faW<xl»ed2at 55° 

 gas and water. Thus, from a companion of experiment 1 andtities as 9 to 7. 

 2, it appears, that about -^ of the whole bulk abforbable at 

 55°, is the diminution of the quantity of abforption produced 

 by each elevation of 10° of temperature; and the fame in- 

 ference follows from various other experiments, the refults of 

 which I have thought it needlefs to flate *. 



2. Sulphuretted Hydrogen Gas. 

 One hundred parts of water, at 55° of temperature, abforb Su 'phuretted 

 86 parts of this gas, obtained from fulphutct of iron and d i 1 u te a b ftniS^at 3 q al 

 fulphuric acid, a refidue being .left, equal in bulk to the gas and 85®, in 

 abforbed. At *$*, under (imilar circumftances, the faroe^ a £' l * es as 

 quantity abforbs 78. 



3. Nitrous Oxide. 



At 4-1 9 , 100 cubic inches of water take up 50 of nitrous Nitrous oxide 

 oxide ; and, at 70°, the fame quantity takes up only 44. Ac- is a 9 bfovbed «; 

 cording to Mr. Davy, in whole experiments, from his intimateq uant j t i e$ as ' 

 knowledge of this gas, and [kill in its preparation, I place more** to 7* 

 confidence than in my own, 100 inches of water at 45°, take 

 up 54- of nitrous oxide, the refiduum being about one half the 

 volume of the gas abforbed. 



4. Lefs abforbable Gafes. 



The experiments with thofe gafes which are abforbed only Lefs abforbable 

 in fparing proportion by water, I could not conveniently makeS afes » 

 at more than one temperature ; nor, indeed, did the obje£t 



* During the abforption of carbonic acid by water, the gas and 

 water having previously the fame temperature, there is an extrica- 

 tion of calcoric, Sufficient to raife the temperature of the water be- 

 tween \ and \ of a degree of Fahrenheit. The fame effect is pro- 

 duced by the condensation of Sulphuretted hydrogen, and nitrous 

 oxide gales, though lefs apparently. To perceive this phenomenon, 

 conliderable quantities ef gas and water mould be ufed. 



appear 



