Volume 2

The philosophy of health; or, An exposition of the physical and mental constitution of man, with a view to the promotion of human longevity and happiness / by Southwood Smith.

  • Smith, Southwood, 1788-1861.
Date:
1847
Catalogue details

Licence: Public Domain Mark

Credit: The philosophy of health; or, An exposition of the physical and mental constitution of man, with a view to the promotion of human longevity and happiness / by Southwood Smith. Source: Wellcome Collection.

    17/464 (page 5)
    Jules open externally, at certain portions of the cuticle, by apertures or passages which constitute the stomates (fig. cxxiv.), and which present the View of the stomata of a leaf, some of them represented as open and others as closed. appearance of areole witha slit in the centre (fig. cxxiv.). They form a kind of oval sphinct- ers, which are capable of opening or shutting, according to circumstances, and they are disposed on both surfaces of the leaf, but most abundantly on the under surface, excepting in leaves which float on water, in which they are always on the upper surface only. ips a 318. The cellular tissue or parenchyma, im- mediately beneath the cuticle, when examined in thin slices, and viewed under a microscope with a high magnifying power, presents a regular struc- ture disposed in perfect order. It consists, on the upper surface, of a layer, and sometimes of two and even three layers, of vesicles of an oblong or