(39A

Ch X

expected that the cell-walls would exhibit wrinkles, & none were ever observed by me. Moreover the contents of all the cells in the tentacles seem to be the same, as may be inferred from their similar appearance after aggregation; & yet only a few of the cells at the base contract, the remainder rest of the tentacles remaining straight.

(A third view maintained by Cohn & Wyman*, though rejected by many physiologists, is that the cells itself themselves contracts, including the walls (a) In the case of Drosera

There seem no inherent improbability in this view the wall contracting, considering their high state of organisation; as they that the walls not only grow, but those of the with glands have the power of absorption & secretion, & are so exquisitely sensitive that they also are as to be affected by the pressure of the most minute inorganic particles (B) of inorganic

Their They transverse walls, partitions, moreover allow the motor impulse to pass through them.

(With respect to the nature of the motor impulse which travels from the glands down the tentacles, & to a greater of less distance across the disc, it seems not improbable