Though the theories of Dr. Bose received acceptance from the leading scientific men of the Royal Society, yet Dr. Bose realised the necessity of bringing about a _general conviction_ as to the truth of the identity of life-reactions in plant and in animal. So he looked for an opportunity of giving demonstration of his discoveries before the leading Scientific Societies of the World. And that opportunity came. The Royal Institution of Great Britain again invited him to deliver a 'Friday evening discourse' on the results of his new researches. The University of Oxford and Cambridge also followed suit. The Government of India also showed their appreciation by sending him again on a Deputation for placing his discoveries before the Scientific world. He remained on deputation from the 3rd April 1914 to the 12th June 1915. DR. BOSE IN EUROPE Proceeding on his Deputation to England, Dr. Bose gave his first lecture, on the 20th May 1914, at Oxford,--where the late Sir John Burden Sanderson and his followers were the leaders of biological thought--in presence of very distinguished scientists. It was a grand success. Actual visualisation by physical demonstration of the results of his novel researches at once convinced those who were present. He next proposed to give a discourse on Plant Response before the University of Cambridge. The interest in this lecture became so very keen that the Botanical Department of Cambridge went to the length of importing soil from India to give the plants the most favourable conditions for exhibiting their specific reactions. At the lecture, the large Botanical Theatre became filled with scientific specialists, dons and advanced students, who followed with great attention the experiments with which he illustrated his discourse. He was greeted with applause by the eminent scientists who thronged the lecture-theatre, at the end of every experiment. Sir Francis Darwin, the eminent botanist, in proposing a vote of thanks to Dr. Bose, said that 'he was filled with admiration, not only for the brilliancy of the work but for the convincing character of the experiments.' The scientists next assembled in great force, on the 29th May 1914, to hear the 'Friday Evening Discourse' of Dr. J. C. Bose on 'Plant Autographs and their Revelations,' at the Royal Institution, which was highly appreciated. At the end of the Discourse, Sir James Dewar, President of the Institution, gave an 'At Home' in honour of Dr. and Mrs. Bose.[34] THE MAIDA VALE LABORATORY