Chemical observations on sugar.

  • Rigby, Edward, 1747-1821.
Date:
1788
Catalogue details

Licence: Public Domain Mark

Credit: Chemical observations on sugar. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    We have in this, then, a fufficient proof getables by one procefs; but it is not im- probable that this principle may be alfo communicated by the fun’s rays, which, as before obferved, are concerned in pro- moting vegetable life and growth, in fome other way than by producing a warmer temperature in the atmofphere; for, from The original experiments of Dr. Priellley on this fub- jett, in which air rendered fo foul as to be unfit for the fupport of animal life or combullion, was fo far reltored, by afprig of mint growing in it, as to be fit for both pur- pofes, is, certainly, an incontrovertible proof of thefirft; and the peculiarly vigorous manner in which the plants, which were the fubjedls of thefe experiments, flourifhed in the phlogiltkated air, is, equally, a proof of the latter. Whether, therefore, the air be purified by circulat- ing through plants, and depofiting its phlogillon in them, and it be afterwards expelled in a dephlogillicatcd flate, as Dr. Ingenhoufz has luppofed; or whether the phlogif- ton be abforbed by vegetables from the furrounding air, without the air being admitted into the circulation, the two circumftances of the plants receiving the phlogillon, and the air parting with it, being equally the fame, they equally apply to the general doftrine which I have ad- vanced, all I maintain being fimply the admiflion and retention of phlogillon in all vegetables. of the admiflion of fome