ABSORfTION OF THE GASES. 2^ 



5i If water impregnated with any one gas (as hydrogenous) If water and ■: 



be agitated with another gas e(/?<a^/j/ ablbrbable (as azotic) there f^ confinement 



wiU apparentli^ be no abfarption ot" the latter gas; just as much a mixture will . 



eas being found after agitation as was introduced to the water; ^^^^ place of the 

 % "^ ft » ' gafes in and out 



but upon examination the refiduary gas will be found a mixture of the water, 

 of the two, and the parts of each, in the water, will be ^'^* 

 exadly proportional to thofe out of the water. 



6. If wal.er impregnated with any one gas be agitated with 

 another gas lefs or more abforbabie ; there will apparently be 

 an inereafe or diminution of the latter ; but upon examination 

 the refiduary gas will be found a mixhire of the two, and the 

 proportions agreeable to article 4. ■ 



7. If a quantity of water in a phial having a -ground ftop- Temperature 

 per very accurately adapted, be agitated with any gas, or^°""°^^,Y^ 

 mixture of gafes, till the due fliare has entered the water ; fluids, 

 then, if the Itopper be fecured, the phial may be expofed to 



any variation of tanpcrature, without difturbing the equilibri- 

 um : That is, tiie quantity of gas in the water will remain 

 the fame whether it be expofed to heat or cold, if the ftopper 

 be air-tight. 



N. B. The phial ought not to be near full of water, and the 

 temperature (liould be between 32*^ and 212", 



b. If water be impregnated with one gas (as oxygenous), Gafes which are 

 and another gas, having an affinity for the former (as nitrot^s), ^1 ^ ^® ""*' 

 be agitated along with it ; the abforption of the latter gas will 

 be greater, by the quantity neceflary to faturate the former, 

 thau it would hav« been if the water had been free from gas.* 



9. Moll liquids free from vifcidity, fuch as acids, alcohol. The abforption 



liquid fulphurets.and faline folutions in water, abforb the fame ^^ other liquids 



^ ^ IS the fame as 



quantity of gafes as pure water; except they have an affinity by water. ''' 



for the gas, luch as fulphurets for oxygen, &c. 



The preceding articles contain the principal fads neceflary 



l-o eftabiifti the theory of abforption : Thofe that follow are of 



a fubordinate nature, and partly deducible as.corrollaries to 



iliero. 



^ One pait of oxygenous gas requires 3.4 of nitrous gas to fa- 

 turate it in water. It is agreeable to this that the rapid mixture of 

 oxygeiious and nitrous gas over a broad furface of water,- ecca- 

 fions a greater diminution than otherwiie. In faft, the nitrous 

 acid is formed this way ; whereas., when water is not prefent, the 

 nitric acid is formed, which requires juft half the quantity of ni- 

 trous gas, as I have lately afcertained. 



Vol. XIII.—April, 1806. " Y ]0. P..!re 



