[38] The blue green acid is not homogeneal in its composition, it is composed of the blue green spherules and the bright green acid. The blue green spherules are of greater specific gravity than the dark green acid, probably because they contain little or no water.
[39] The composition of the acids thus marked, is given from calculations.
[40] Nitrous gas contains 44,05 Nitrogene, and 55,95 Oxygene, as has been said before.
[41] A great portion of it, of course, dissolved in the water with the nitrous acid carried over.
[42] Their changes of volume, corresponding to changes of temperature, most probably, are likewise different.
[43] Probably in the ratio of the square of the quantity of water united to it.
[44] The quantities of Oxygene and Nitrogene in any solution, may be thus found—— Let A = the true acid, X the oxygene, and Y the nitrogene.
Then
| 238 A | A | ||
| X = | ——— | and Y = | ——— |
| 239 | 239 |
[45] Experiments and Observations; last edition, vol. 1, page 384.