Experiments upon vegetables : discovering their great power of purifying the common air in the sun-shine, and of injuring it in the shade and at night : to which is joined, a new method of examining the accurate degree of salubrity of the atmosphere
Experiments upon Vegetables is a 1779 London scientific treatise by Jan Ingenhousz, published for P. Elmsly and H. Payne, on how plants purify air in sunlight and foul it in shade and darkness. Its engraved plates show laboratory apparatus, glass vessels, stands and tools drawn in precise linear detail. A designer could take from them the crisp, labelled technical diagram style, with lettered figures, hatched shading and clean flat geometry suited to scientific infographics.



