Abstract
THE Raman spectrum of water has been studied in great detail by a large number of workers, notably A. S. Ganesan and S. Venkateswaran and A. L. Meyer. So far as I am aware, however, no attempt seems to have been made to study the polarisation of the Raman bands. I have studied the Raman spectrum of pure water by the original method of Raman. The liquid, which was enclosed in a large bulb, had been carefully purified by repeated distillation in vacuo. The polarisation photographs of the liquid were taken with a fairly wide slit, due corrections in the exposures for the two directions of the nicol, for the polarisation introduced by the optical train in the glass spectrograph itself, having been made by a previous calibration of the instrument.
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