After the publication of 'The Comparative Electro-Physiology,' the
Government of India again sent Dr. Bose on a Scientific Deputation. He
went over to England and America and placed the results of his
researches before the learned Scientific Bodies. He read a paper 'On
Mechanical Response of Plants' at the Liverpool meeting of British
Association, in 1907. He then read a paper on 'The Oscillating Recorder
for Automatic Tracing of Plant Movements' before the New York Academy of
Sciences, and, in December 1908, he gave an address on 'Mechanical and
Electrical Response in Plants,' at the Annual Meeting of the American
Association for the Advancement of Science, held at Baltimore, and, in
January 1909, he delivered a lecture on 'Growth Response of Plants'
before the United States Department of Agriculture and, in February
1909, he read a paper on 'Death-spasm in Plants,' before the University
of Illinois, and, in March 1909, a paper on 'Multiple and Autonomous
Response in Plants' before the Madison University. He also lectured
before the New York Botanical Society, the Medical Society of Boston,
the Society of Western Electric Engineers at Chicago. He also delivered
a series of post-graduate lectures on Electro-Physics and Plant
Physiology at the Universities of Wisconsin, Chicago, Ann Arbor. He
returned to India, in July 1909.