[Footnote 19: The tonnage of these ports is for the years 1904 and 1906, no corresponding figures being obtainable for 1907 and 1908.] The premier port of the Argentine, and we might add of South America, is Buenos Ayres, which in extent and connections rivals the finest ports of Europe. It consists of two harbours, of which one, situated at the mouth of a little river called Riachelo, is frequented principally by steamers of light draught and sailing-ships; the other is known as the Port of the Capital, or more commonly Port Madero, from the name of the contractor responsible for the harbour works. The port contains, altogether, four basins and 6-1/3 miles of quays, four of which are situated on the flank of the city. Along these quays are disposed immense warehouses, able to contain 29 millions of tons of merchandise, as well as great flour-mills and grain-elevators, with a capacity of more than 200,000 tons, which cost more than £1,000,000 sterling.[20] [Footnote 20: The net capacity of the customs warehouses is over 400,000 tons; as products remain there on an average for two months, we have an annual figure of 6 × 400,000 = 2,400,000 tons. This is the maximum of goods per annum which the customs depôts can at present receive.] This harbour has cost in all some £7,000,000, and every year a sum of nearly 3 millions of paper piastres, or £200,000, is spent upon the work of maintaining the channel of approach at a proper depth. At the season when the traffic is densest, the port holds as many as 1400 steamers and sailing-vessels, loading and unloading. It is evident that, with the constant increase of commercial activity, further enlargements will soon be necessary. The Government is at the present moment considering a gigantic scheme of improvement, with a view to which several groups of European contractors have already submitted estimates. In order to give some idea of the importance of the plant at the disposal of exporters at Buenos Ayres, we need only speak of the great market or _embarcardero_ for live-stock. It covers an area of 350,000 square yards, of which 117,000 are occupied by buildings; its capacity is 40,000 sheep and more than 1500 cattle. There is also another notable establishment, reputed to be the largest in the world: the Central Produce Market. The building is of four stories, covers an area of 180,000 square yards, and cost £830,000. The following table shows the quantities, in metric tons, of products entering the market between February and September in 1905, 1906, 1907 and 1908. TONS OF 2205 lbs. 1905 1906 1907 1908