Volume 1

Experiments upon vegetables, discovering their great power of purifying the common air in the sun-shine, and of injuring it ... at night. To which is joined, a new method of examining the ... salubrity of the atmosphere / [Jan Ingenhousz].

Jan Ingenhousz

Date:: 1779

Credit: Experiments upon vegetables, discovering their great power of purifying the common air in the sun-shine, and of injuring it ... at night. To which is joined, a new method of examining the ... salubrity of the atmosphere / [Jan Ingenhousz]. Source: Wellcome Collection.

14/402 page 8

$[ viii ] exprefs the true fituation of my mind in that refpedt. Permit me, sir, to leave behind me fome public teftimony of my re- fpedtful gratitude to you, as the \ '' ■■ only, though fmall, return I can make you; the only way by which I can publicly fhew, that the uni'o- licited favours fo generoufly be¬ llowed upon a foreigner, who could not claim the lead: merit with you, have made fo ftrong an impreffion on my mind as no time is able to weaken. You have recommended me, sir, without my foliciting any favour from you, to thofe Auguft Sovereigns who are ftill the lupport of the illuftrious House of Austria ; . thofe$