Copy 1

Georgical essays / [by Alexander Hunter and others; edited by A.H.

  • Alexander Hunter
Date:
1777
Catalogue details

Licence: Public Domain Mark

Credit: Georgical essays / [by Alexander Hunter and others; edited by A.H. Source: Wellcome Collection.

    87/560 page 75
    “‘ animals; which defect it was neceflary to “ fupply by the entrance of a much greater quantity of fluid. And the motion of the << fap is thereby much accelerated, which in the “ heartlefs vegetable would vutherwife be very * flow; it having probably only a progreffive “and not a circulating motion, as in animals. _ Since then a plentiful perfpiration is found fo “¢ neceflary for the health of a plant or tree, it is ** probable that many of their diftempers are *“ owing to a ftoppage of this per{piration, wh * inclement air. “ The perfpiration in men is often ftopped to a fatal degree; not only by the inclemency “of the air, but by intemperance, and violent ¢ heats and colds. But in the more temperate ‘vegetable, perfpiration can be ftopped only “© by inclement air; unlefs by an unkindly foil, “or want of genial moifture, it is deprived of ** proper or fufficient nourifhment. “ As Dr. Keill obferved in himfelf a confi- derable latitude of degrees of healthy perfpi- “ ration, from a pound and a half to 3 pounds; «“] have alfo obferved a healthy latitude of * perfpiration in this fun-flower, from 16 to 28 # ounces, in twelve hours day. The more it “° was
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