[21] That is, by the solution of ammonia, and air.
[22] The following is an account of the increase and diminution of weight of the globe, as it was noted in the journal.
| Globe filled with common air | gr. 2066,5 |
| After exhaustion | 2034,5 |
| After introduction of nitrous gas, 82 cubic inches | 2064,25 |
| After the accidental admission of common air | 2067,25 |
| After the admission of oxygene | 2091,75 |
| —— —— 41 grains of water | 2133,25 |
| —— —— 51 cubic inches of air | 2149,75 |
| Taken out 54 grains of solution | 2095,75 |
| Introduced 13 grains of ammoniacal solution | 2109,25 |
| After introduction of common air | 2106,5 |
[23] Decimals are omitted, because the excess of the two first numbers is exactly corrected by the deficiency of the last.
[24] As is evident from the superabundant quantity of oxygene thrown into the globe.
[25] The weight of the acid poured into the cylinder being known, its specific gravity was known from the space it occupied in the phial. The weight of water being likewise known, the specific gravity of the solution, when the common temperature was produced, was given by the condensation.
[26] That is, such as it exists in the aëriform state at 55°. From the strong affinity of nitrous acid for water, we may suppose that this acid gas contains a larger proportion of it than the other gases.
[27] This appearance will be explained hereafter.
[28] This phænomenon will be particularly explained hereafter.
[29] The outline only of this apparatus is given here, as far as was necessary to make the experiment intelligible; a detailed account of it, and of its general application, will be given in the [appendix].