Next toward the docks is an old castle whose gray and lichen-covered walls are a striking contrast to the new modern buildings that surround it. These walls inclose a considerable area, which by courtesy is called a fort. It was a formidable defense at one time, and has been the scene of much exciting history, but is obsolete now. The walls are of heavy masonry, but a shot from a modern gun would shatter them. They inclose the military headquarters of the Bombay province, or Presidency, as it is called in the Indian gazetteer, the cathedral of this diocese, quarters and barracks for the garrison, an arsenal, magazines and other military buildings and a palatial sailors' home, one of the finest and largest institution of the kind in the world, which is supported by contributions from the various shipping companies that patronize this place. There are also several machine shops, factories and warehouses which contain vast stores of war material of every sort sufficient to equip an army at a fortnight's notice. About twelve hundred men are constantly employed in the arsenal and shops making and repairing military arms and equipments. There is a museum of ancient weapons, and many which were captured from the natives in the early days of India's occupation are quite curious; and there the visitor will have his first view of one of the greatest wonders of nature, a banyan tree, which drops its branches to take root in the soil beneath its over-spreading boughs. But you must wait until you get to Calcutta before you can see the best specimens. Bombay is not fortified, except by a few guns behind some earthworks at the entrance of the harbor, but it must be if the Russians secure a port upon the Arabian Sea; not only Bombay, but the entire west coast of India. The only protection for the city now is a small fleet of battle ships, monitors and gunboats that lie in the harbor, and there are usually several visiting men of war at the anchorage. Bombay is the second city in population in India, Calcutta standing first on the list with 1,350,000 people, and, if you will take your map for a moment, you will see that the two cities lie in almost the same latitude, one on each side of the monstrous peninsula--Bombay at the top of the Arabian Sea and Calcutta at the top of the Bay of Bengal. By the census of 1891 Bombay had 821,764 population. By the census of 1901 the total was 776,006, the decrease of 45,758 being attributed to the frightful mortality by the plague in 1900 and 1901. It is the most enterprising, the most modern, the most active, the richest and the most prosperous city in India. More than 90 per cent of the travelers who enter and leave the country pass over the docks, and more than half the foreign commerce of the country goes through its custom-house. It is by all odds the finest city between modern Cairo and San Francisco, and its commercial and industrial interests exceed that of any other.