THE investigation of the water resources of India has been in hand for some time. The preliminary report, issued in the autumn of 1919, gave an account of the initiation of the Survey and the preparations made by Mr. Barlow in conjunction with Mr. Meares up to the time of the death of the former. The second volume, now issued, contains a resume of the work which has been done since Mr. F. E. Bull took over the chief engineer-ship, with Mr. Meares as electrical adviser. The itinerary consists of a series of visits to officers specially engaged in the Survey, checking their reconnaissances, and making further researches in British India and the Native States. Hydro-Electric Survey of India. Vol. ii.: Second, Report on the Water-Power Resources of India, ascertained during the Season 1919–20 by F. E. Bull and J. W. Meares. Pp. 123. (Calcutta: Government Printing Press, 1920.) R.1 6 annas.