The Burmese delta (a network of intercommunicating waters from the Indian border-ranges to the banks of the Salween near the Siamese frontier) has some fourteen outlets, but most of these are obstructed by sandbars and coral-reefs. Bassein and Rangoon are the seagoing ports. The latter is a large city of over one hundred thousand inhabitants, and now ranks third in commercial importance in the Indian empire. This plain from the coast to Prome is subject to periodical inundations and is exceedingly productive. It is a great rice-district. Below the northern frontier of British Burmah the Irawaddy is nearly three miles broad. In the neighborhood of Prome the face of the country changes. Ranges of lofty mountains approach nearer and nearer, and finally close in on the stream, the banks becoming precipitous and the valley narrowing to three-quarters of a mile. Above the latitude of Ava the whole region is intersected by mountains, and not far from Mandalay, the capital of Upper Burmah, is their lowest defile. The banks at this point are covered with dense vegetation and slope down to the water’s edge. Still ascending the river, before reaching Bhamo one enters an exceedingly picturesque defile, the stream winding in perfect stillness under high bare rocks rising sheer out of the water. The current of the upper defile above Bhamo is very rapid, and the return waters occasion violent eddies. When the water is at its lowest no bottom is found even at forty fathoms. For centuries the Irawaddy has furnished the sole means of communication between the seaboard and interior. The Irawaddy Flotilla Company, started in 1868, employs over one thousand hands, and sends twice each week magnificent iron-clad steamers with large flats attached to Mandalay. The time-distance between the two capitals is greater than from New York to Liverpool. Smaller vessels go on to Bhamo. The native craft are estimated at eight thousand. The rapid increase of trade along this river attracts colonists and has greatly enriched British Burmah. Bhamo, on the left bank, near the confluence of the Taping and close to valuable coal-mines, is within a few miles of the Chinese frontier. The old trade-route noted by Marco Polo is still in use, but the ranges to be crossed, the great cost of land-carriage, together with the dangerous neighborhood of the Kachyen banditti, render the road of limited avail for trade-purposes beyond the fertile Taping valley. The China Inland Mission and the American Baptists have stations at Bhamo.