The shipments of foreign merchandise each way are relatively insignificant.
It is the largest peanut market in the world, is in a great truck-gardening region, and makes large shipments of cotton (822,930 bales in 1905), oysters, coal, fertilizers, lumber, grain, fruits, wine, vegetables, fish and live stock.
Dvina, which falls into the sea below Riga, is shallow above the rapids of Jacobstadt, but navigation is carried on as far as Vitebsk - corn, timber, potash, flax, &c., being the principal shipments of its navigable tributaries (the Obsha, Ulla and Kasplya).
Whatever the ostensible form of a railway tariff, the contribution of the different shipments of freight to these general expenses is determined on the principle of charging what the traffic will bear.
This order came into force on the 30th of April, and the result was a marked decline in the shipments of live cattle and sheep from the River Plate, but a decided increase in the quantity of frozen meat sent thence to the United Kingdom.