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Scientific Memoirs by

TABLE IX.—Results attending Mechanical Obstruction to the depression of the
Petiole on action of the Primary Pulvinus
—continued.

No. of
Experi-
ment.
Result.
3 A leaf with two large pinnæ. Action in cut pinnules; pause; action in primary
pulvinus; very slow, partial action in 8 pairs of pinnules beneath the cut
pair; no further result.
4 Action in the cut pinnules; pause; action in primary pulvinus; centripetal action
in the distal and basal portions of the cut pinna; slight action in the central
portion; no further result.
5 Action in the cut pinnules; action in the primary pulvinus; partial, centripetal
action in the distal and basal portions of the cut pinna; no action in the
central portion; no further result.
6 Slow, spreading centripetal action in the outer part of the cut pinna; action in
the primary pulvinus; very slow and partial; centripetal action in the basal
part of the cut pinna; no further result.
7 Action in the cut pinnules; action in the primary pulvinus; partial action in the
distal and basal thirds of the cut pinna; complete action in the central third;
no further result.
8 Almost complete centripetal action in the cut pinna; action in the primary pul-
vinus; no further result.
9 Action in the cut pinnules; pause; action in the primary pulvinus; almost com-
plete, slow, centripetal action in the cut pinna; no further result.
10 Slow, progressive, complete centripetal action in the cut pinna; long pause;
action in the primary pulvinus; partial, irregular, centrifugal action in another
pinna; very long pause; slight, slow action in the basal part of another
pinna; no further result.
11 Action in the cut pinna; action in the primary pulvinus; pause; action in one
other pinna; no further result.
12 Action in the cut pinnules; pause; action in the primary pulvinus; partial and
incomplete centripetal action in the cut pinna; action in the basal half of one
other pinna; no further result.
  B.—Depression of the leaf due to the action of the primary pulvinus fully
carried out.
13 A two-pinnaed leaf. Pause; spreading, centripetal action in the cut pinna; full
depression; well pronounced action in the basal half of the other pinna.
14 Slow, almost complete action in that pinna; pause; full depression; no further result.
15 Action in the cut pinnules; slow, progressive, centripetal action in that pinna;
full depression; almost complete, spreading, centrifugal action throughout the
other pinnæ.

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