Conversations on vegetable physiology ; comprehending the elements of botany, with their application to agriculture / Mrs. Marcet.

  • Marcet, Mrs. (Jane Haldimand), 1769-1858.
Date:
1839
Catalogue details

Licence: Public Domain Mark

Credit: Conversations on vegetable physiology ; comprehending the elements of botany, with their application to agriculture / Mrs. Marcet. Source: Wellcome Collection.

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    Fig. 4. VERTICAL SECTION OF THE STEM OF A DICOTVLEDON, OR EXOGENOUS PLANT. The Oak. h, The bark, composed of the vertical layers a, and the internal bark b. d e, The wood, composed of the alburnum or young wood c, the perfect wood d, and the pith e. The circular zones represent the layers of wood, and the lines diverging from the centre tlie medullary rays. Fig. 5. A BRANCH TURNING ITS LEAVES TOWARDS THE LIGHT.