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Figure 2–3. Pictures of plant cells (After van Leeuwenhoek, 1922; From Katznelson, 1963).
The concept of the cells as hollow spaces separated by thick
walls has been preserved for long period of time. It has not
been changed easily even after the interesting and well
illustrated systematic descriptions in the anatomy of
plants of M. Malpighi (1675, 1679), N. Grew (1671, 1682),
etc. Malpighi as well as Leeuwenhoek has observed
cells in different plant parts (Fig. 2–4) but he also has fallen far
behind the idea of the cell structure. Grew has recorded
remarkable observations of plant tissue cells (Fig. 2–5). By
contrast to Leeuwenhoek and Malpighi, Grew has made a step
further by reaching to the idea that the cells are inherent to all
plant organs. He has introduced the terms parenchyma and
tissues which are still valid.
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Fig. 2–4. Pictures of cells (After Malpighi, 1686; From Katznelson, 1963).