162 DROSERA ROTUNDIFOLIA. Cuap. Vil. 
eight closely inflected. The leaf remained in this state for two 
days. 
(4) After 2 hrs. 2 m. only fifty-nine tentacles inflected ; but 
after 5 hrs. all the tentacles closely inflected excepting two 
which were not affected, and eleven which were only sub-in- 
flected; after 7 hrs. blade considerably inflected; after 12 hrs. 
much re-expansion. 
(5) After 4 hrs. all the tentacles but fourteen inflected ; after 
9 hrs. 30 m. beginning to re-expand. 
(6) After 1 hr. thirty-six tentacles inflected; after 5 hrs. all 
but fifty-four inflected ; after 12 hrs. considerable re-expansion. 
(7) After 4 hrs. 30 m. only thirty-five tentacles inflected or 
sub-inflected, and this small amount of inflection never increased. 
Now tor the seven corresponding leaves in water :— 
(1) After 4 hrs. thirty-eight tentacles inflected; but after 
7 hrs. these, with the exception of six, re-expanded. 
(2) After 4 hrs. 20 m. twenty inflected; these after 9 hrs. 
partially re-expanded. 
(8) After 4 hrs. five inflected, which began to re-expand after 
7 hrs. 
(4) After 24 hrs. one inflected. 
(5), (6) and (7) Not at all affected, though observed for 
24 hrs., excepting the short tentacles on the borders of the disc, 
which as usual formed a ring. 
A comparison of the leaves in the solution, especially of 
the first five or even six on the list, with those in the water, 
after 1 hr. or after 4 hrs., and in a still more marked degree 
after 7 hrs. or 8 hrs., could not leave the least doubt that the 
solution had produced a great effect. This was shown not only 
by the vastly greater number of inflected tentacles, but by 
the degree or closeness of their inflection, and by that of their 
blades, Yet each gland on leaf No. 1 (which bore 255 glands, all 
of which, excepting five, were inflected in 80 m.) could not have 
received more than one-four-millionth of a grain (-0000162 
mg.) of the salt. Again, each gland on leaf No. 3 (which 
bore 283 glands, all of which, except nine, were inflected in 
2 hrs. 80 m.) could have received at most only the ssgh5q5 of 
a grain, or ‘0000181 mg. 
Four leaves were immersed as before in a solution of one part 
to 656,250 of water (1 gr. to 1500 oz.) ; but on this occasion I 
happened to select leaves which were very little sensitive, as 
on other occasions I chanced to select unusually sensitive 
leaves. ‘The leaves were not more atiected after 12 hrs. than 
