It may be mentioned that Dr. Bose showed one very remarkable fact--from
the summaries of the automatic records of the responses given by a plant
(which was subjected to an impulse during all hours of the day and
night)--that it wakes up during morning slowly, becomes fully alert by
noon, and becomes sleepy only after midnight, resembling man in a
surprising manner.
"IRRITABILITY OF PLANTS"
Dr. Bose embodied the results of his fascinating researches,
obtained by the introduction of new methods, in another remarkable
volume--"Researches on Irritability of plants"--which was published, in
1913.