The lines which skirt the edge of the Delta are carried with a very small slope, and therefore require no locks, except at the terminus, where, on one side (the right bank), the canal is connected with a similar line led from the Kistna, and on the left bank, at a distance of 30 miles, it is connected with the port of Cocanada by a short junction canal, in which are built the locks necessary to overcome the difference of level, about 30 feet above the sea. All the main lines are dropped into the tidal reaches of the respective branches of the Godavery, and are in this manner connected with one another. The total length of navigable canals, exclusive of the tidal portions of the river, and the various salt-water creeks permeating the lower part of the Delta, extends for between 458 and 502 miles. The canals are open to any carriers. Tolls are not levied generally, but only on unlicensed boats, as the water rates derived from irrigation yield a large return on the capital expenditure. The majority of boats pay the small registration fee which is exacted in preference to tolls. _s._ The fees on cargo boats, per ton of 50 cubic feet, were 4 ” passenger boats, 1st class ” 8 ” ” 2nd class ” 6 These rates were increased from January 1882 to:— Cargo boats, per ton of 75 cubic feet 7 Passenger boats, 1st class ” 14 ” 2nd class ” 10 These fees free boats over the whole system of canals during the calendar year. Unlicensed boats pay 6_d._ per ton for a single trip. The charge for third-class passengers on boats is one-eighth of a penny per mile. Between the river Tumbaddra and the river Pennar there is a large canal, which was originally constructed by the Madras Irrigation Company, and, although intended primarily for an irrigation line, was fitted with locks, in order to enable it to be used for navigation. This canal is, however, only available for about eight months of the year, as the water supply in the river has to be passed on for use in the Kistna Delta. The Ganges and the Brahmapootra are connected with the Hoogly by means of a number of creeks, which are really natural canals, and are connected by two artificial canals: the first called the Circular, or Baliaghatta Canal, and the other Tolly’s Nullah.