The manures most advantageously applicable to the various sorts of soils, and the causes of their beneficial effect in each particular instance / By Richard Kirwan.

  • Richard Kirwan
Date:
1796
Catalogue details

Licence: Public Domain Mark

Credit: The manures most advantageously applicable to the various sorts of soils, and the causes of their beneficial effect in each particular instance / By Richard Kirwan. Source: Wellcome Collection.

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    1 [ 49 ] almoft daily with diftilled, the other with wa- ter impregnated with fixed air, in the propor- tion of half a cubic inch to an ounce of water: I N f * both were expofed to all the influences of the atmofphere, except rain. The bean treated with aerated water appeared over ground nine days fboner than that moiftened with diftilled water, and produced 25 beans; whereas the other pot produced only 15, The fame expe- riment was made on ftock-julyflowers and other plants with equal fuccefs-f. The man- ner in which fixed air a6ts in promoting vege- tation, feems well explained by Mr. Senebier: he firft difcovered that frefh leaves expofed to the fun in fpring-water, or water (lightly im- pregnated with fixed air, always produce pure air as long as this impregnation lafts; but as foon as it is exhaufted, or if the leaves be placed in water out of which this air has been expelled by boiling, they no longer afford pure air J: from whence he infers that fixed air is decompofed, its carbonic prin- ciple retained by the plant, and its pure air H expelled. / * •> • 1 * f 2d Chy. An. 1788, 399. t Sur PInfiuencede laLumiere, & 41 Rofier, 206, J