Tientsin is the largest port on the coast above Shanghai. Owing, however, to the shallowness of the gulf and the bar at the mouth of the Pei ho, over which at neap tide only three or four feet of water flow, the port is rendered inaccessible to large foreign vessels. Its size and importance were formerly chiefly owing to its being the terminus of the Grand Canal, where the produce and taxes for the use of the capital were brought. Mr. Gutzlaff, who visited Tientsin in 1831, described it as a bustling place, comparing the stirring life and crowds on the water and shores outside of the walls of the city with those of Liverpool. The enormous fleet of grain junks carrying rice to the capital is supplemented by a still greater number of vessels which take the food up to Tung chau. Formerly the coast trade increased the shipping at Tientsin to thousands of junks, including all which lined the river for about sixty miles. This native trade has diminished since 1861, inasmuch as steamers are gradually ousting the native vessels, no one caring to risk insurance on freight in junks. The country is not very fertile between the city and the sea, owing to the soda and nitre in the soil; but scanty crops are brought forth, and these only after much labor; one is a species of grass (_Phragmites_) much used in making floor-mats. Sometimes the rains cause the Pei ho and its affluents to break over their banks, at which periods their waters deposit fertilizing matter over large areas. The approach to Tientsin from the eastward indicates its importance, and the change from the sparsely populated country lying along the banks of the Pei ho, to the dense crowds on shore and the fleets of boats, adds greatly to the vivacity of its aspect. “If fine buildings and striking localities are required to give interest to a scene,” remarks Mr. Ellis, “this has no claims; but, on the other hand, if the gradual crowding of junks till they become innumerable, a vast population, buildings, though not elegant, yet regular and peculiar, careful and successful cultivation, can supply these deficiencies, the entrance to Tientsin will not be without attractions to the traveller.”[37] The stacks of salt along the river arrest the attention of the voyager; the immense quantity of this article collected at this city is only a small portion of the amount consumed in the interior. Tientsin will gradually increase in wealth, and now perhaps contains half a million of inhabitants. Its position renders it one of the most important cities in the empire, and the key of the capital.