The geologist Richard Dixon Oldham (1858-1936) published the second edition of Geology of India in 1892 for the Geological Survey of India. The work is a thoroughgoing revision of the first edition of the same manual compiled by H. M. Medlicott (1829-1905) and W. T. Blanford (1832-1905), published in 1879. It contains one of the earliest and most important geological surveys of India. Owing to an increase in available data since the first edition,...