Observations on the structure and economy of plants: to which is added the analogy between the animal and vegetable kingdom / [Robert Hooper].

  • Hooper, Robert, 1773-1835
Date:
1797
Catalogue details

Licence: Public Domain Mark

Credit: Observations on the structure and economy of plants: to which is added the analogy between the animal and vegetable kingdom / [Robert Hooper]. Source: Wellcome Collection.

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    flowers in January, but the flowers were com¬ pletely formed in the month of Augufh pre¬ ceding. This fa£t will alfo be demonfirated, if the coats of a tulip root about the begin¬ ning of September be feparated ; for in the center a kind of cell will be found, in which the young flower is fltuated, which is not to make its appearance until the following AprU or May. * c THE VESSELS OF VEGETABLES. Vegetables,like animals, have their fluids con¬ tained in certain appropriated veflels, {length¬ ened by a thin fibrous texture. By thefe vef- fels, which are difpofed in a regular order, the different functions neceflary to the growth of the vegetable and its various fecretions and excretions are performed. The veflels of vegetables are divided into, 1. The Succous, which afcend perpendicularly, and carry the nourilhment or chyme of the plant from the root, to every part. At their extremities they are generally called abfor- bents. 2. The Utriculous, which run horizontally in the cellular texture, and are evident upon cutting the trunk in a {freight direction.