_Precious Stones._--Despite its legendary wealth, which is really due to the accumulations of ages, India cannot be said to be naturally rich in precious stones. Under the Mahommedan rule diamonds were a distinct source of state revenue; and Akbar is said to have received a royalty of £80,000 a year from the mines of Panna. But at the present day the search for them, if carried on anywhere in British territory, is an insignificant occupation. The name of Golconda has passed into literature; but that city, once the Mussulman capital of the Deccan, was rather the home of diamond-cutters than the source of supply. It is believed that the far-famed diamonds of Golconda actually came from the sandstone formation which extends across the south-east borders of the nizam's dominions into the Madras districts of Ganjam and Godavari. A few poor stones are still found in that region. Sambalpur, on the upper channel of the Mahanadi river in the Central Provinces, is another spot once famous for diamonds. So late as 1818 a stone is said to have been found there weighing 84 grains and valued at £500. The river-valleys of Chota Nagpur are also known to have yielded a tribute of diamonds to their Mahommedan conquerors. At the present day the only place where the search for diamonds is pursued as a regular industry is the native state of Panna in Bundelkhand. The stones are found by digging down through several strata of gravelly soil and washing the earth. Even there, however, the pursuit is understood to be unremunerative, and has failed to attract European capital. At the present day the only important industries are the rubies and jade of Burma. The former are worked by the Ruby Mines Company or by licensed native miners under the company. The value of the rubies found has increased rapidly, and the company, which was for some time worked unprofitably under the lease granted in 1896, has now, with the aid of favourable treatment from the government, become more prosperous. Pearls are found off the southern coast of Madras and also in the Mergui archipelago. _Trade._