Development of plants by Iqbal Hussain

By Iqbal Hussain

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It was evident that the strength of the solution had interfered with the completion of the process, as we shall see likewise follows from too great heat. All the foregoing observations relate to the exterior tentacles, which are of a purple colour; but the green pedicels of the short central tentacles are acted on the carbonate, and by an infusion of raw meat, in exactly the same manner, with the sole difference that the aggregate masses are of a greenish colour; so that the process is in no way dependent on the colour of the fluid within the cells.

Two leaves thus h'eated become after 1 hrs. Flaccid, and seem killed; all the cells in their tentacles contained spheres of protoplasm, but these were small and discoloured. Two other leaves were placed in a solution not quite so strong, and there was well-marked aggregation in 30m. After 24 hI'S. the spherical or more commonly oblong masses of protoplasm became opaque and granular, instead of being as usual h'anslucent: and in the lower cells there were only innumerable minute spherical granules.

On several occasion, a large number of glands were touched only once with a needle or fine brush, hard enough to bend the whole flexible tentacle; and though this must have caused a thousands-fold greater pressure than the weight of the above described particles, not a tentacle moved. On another occasion forty-five glands on eleven leaves were touched once, twice, or even thrice, with a needle or stiff bristle. This was done as quickly as possible, but with force sufficient to bent the tentacles; yet only six of the them became inflected - three plainly, and three in a slight degree.

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