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
Catalogue details

Licence: Public Domain Mark

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.

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    [ 300 ] Air extracted from fpars cannot be examined, nor even obtained, but by making ufe of mercury inftead of water : for this lingular air, which corrodes glafs, is im¬ mediately reduced into ftone by the firft contact with water. This trough confifts of two dif¬ ferent ftrong wooden boxes. a a is the box containing the mercury; it is in the infide ih Paris inches long, 4 inches and 2 lines deep, and 4 inches and 2 lines wide. The board c is placed at one inch and 2 lines diftance from the brim, and is 7 lines thick. The orifice dof the funnel hollowed out of the un- der-fide of this board is two lines above the furface of the board. This box is placed within another larger box equally ftrong, b b b b, which i