ABSTRACT
For geological purposes British India may be mapped out into the four geographical divisions of—the Himálayan region, the Indo-Gangetic plain, Peninsular India, and Burma. Numerous minor disturbances occurred in the area which is now Northern India during Palaeozoic and Secondary times, but the great disturbance which has resulted in the formation of the existing chain of the Himalayas took place after the deposition of the Eocene beds. The alluvial deposits prove depressions to have occurred in quite recent geological times ; and within the Himalayan region earthquakes are still common, whilst in Peninsular India they are rare. As regards gems, the geologist comes to the same con- Precious elusion as the economist that the precious stones stones ' of ancient India were the product of forced labour, and that the search for them in our days can scarcely repay the working expenses.
