Sir J. C. Bose delivered on the 18th January 1918, at the Bose
Institute, the second of the series of discourses on revelations of
plant life. This time the audience had the opportunity of witnessing the
working of Bose's newly perfected Crescograph which is undoubtedly one
of the marvels in modern Science. For this apparatus gives a visual
demonstration of movements which are far beyond the highest powers of
microscope. The invisible internal workings of life are thus for the
first time revealed to man.