. An introduction to vegetable physiology. Plant physiology. THE STOEAGE OF RESERVE MATERIALS 237 along its axis. As the deposition proceeds the leucoplast becomes very much stretched longitudinally, till its centre is reduced to a thin film round the rod of starch, while what is left of its substance is accumulated at the two ends. The further activity of these portions results in the develop- ment of the two heads of the dumb-bell, the thin film connecting them ceasing to deposit any starch along the centre of the rod. It is not very easy to see the leucoplasts in the potato; they can be de-
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. An introduction to vegetable physiology. Plant physiology. THE STOEAGE OF RESERVE MATERIALS 237 along its axis. As the deposition proceeds the leucoplast becomes very much stretched longitudinally, till its centre is reduced to a thin film round the rod of starch, while what is left of its substance is accumulated at the two ends. The further activity of these portions results in the develop- ment of the two heads of the dumb-bell, the thin film connecting them ceasing to deposit any starch along the centre of the rod. It is not very easy to see the leucoplasts in the potato; they can be de- tected, however, more easily. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Green, J. Reynolds (Joseph Reynolds), 1848-1914. London, J. & A. Churchill