cells, especially in the exterior tentacles, there was much
greenish-brown pulpy matter.
Experiment 8. A leaf was plunged and waved about for a few minutes in
water at 140 (60 Cent.), and was then left for half an hour in cold
water, but there was no inflection. It was now placed in the strong
solution, and after 2 hrs. 30 m. the inner submarginal tentacles were
well inflected, with their glands blackened, and some imperfect
aggregation in the cells of the pedicels. Three or four of the glands
were spotted with the white porcelain-like structure, like that
produced by boiling water. I have seen this result in no other instance
after an immersion of only a few minutes in water at so low a
temperature as 140 , and in only one leaf out of four, after a similar
immersion at a temperature of 145 Fahr. On the other hand, with two
leaves, one placed in water at 145 (62 .7 Cent.), and the other in
water at 140 (60 Cent.), both being left therein until the water
cooled, the glands of both became white and porcelain-like. So that the
duration of the immersion is an important element in the result.
Experiment 9. A leaf was placed in water at 140 (60 Cent.), which was
raised to 150 (65 .5 Cent.); there was no inflection; on the contrary,
the outer tentacles were somewhat bowed backwards. The glands became
like porcelain, but some of them were a little mottled with purple. The
bases of the glands were often more affected than their summits. This
leaf having been left in the strong solution did not undergo any
inflection or aggregation.
Experiment 10. A leaf was plunged in water at 150 to 150 1/2 (65 .5
Cent.); it became somewhat flaccid, with the outer tentacles slightly
reflexed, and the inner ones a little bent inwards, but only towards
their tips; and this latter fact shows that the movement was not one of
true inflection, as the basal part alone normally bends. The tentacles
were as usual rendered of a very bright red, with the glands almost
white like porcelain, yet tinged with pink. The leaf having been placed
in the strong solution, the cell-contents of the tentacles became of a
muddy-brown, with no trace of aggregation. [page 72]
Experiment 11. A leaf was immersed in water at 145 (62 .7 Cent.),
which was raised to 156 (68 .8 Cent.). The tentacles became bright red
and somewhat reflexed, with almost all the glands like porcelain; those
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