1. The central part of the Santa Fe province forms what is called the district of the "colonies": that is to say, the domain of the colonies established two generations ago, and the zone in which the type of cultivation introduced by them took root. The chief crops here are wheat and flax. Hedges of service trees (_paraisos_) surround the fields. In contrast with the parts of the Pampa which have remained naked, the region of the colonies seems a veritable grove. It stretches westward beyond the frontier of the Cordoba province, and it reaches the fringe of the _monte_ between San Francisco and Mar Chiquita. For the north, Miatello gives 30 deg. S. lat. as the normal limit of the wheat-growing area; beyond this it suffers both from the low rainfall of winter and the excessive rainfall in summer. As a matter of fact, the large estates only reach this latitude on the line from San Francisco to Ceres. On the Resistencia line, north of Santa Fe, they stop at 30 deg. 30' S. lat. In the intervening district the limit of the region of the colonies almost coincides with that of the department of Castellanos, about 30 deg. 45' S. lat. The area lying between this line and the northern edge of the Pampa is given up to breeding. In the south the region of the colonies stretches as far as Las Bandurias and Irigoyen. 2. South of the region of the colonies, the tableland on the right bank of the Parana, west of Rosario and San Nicolas, is the maize region, the corn belt of Argentina. Flax is generally cultivated as well as maize. It is the agricultural country _par excellence_ of Argentina. The soil, of fine clay, dark red in colour and retentive of moisture, and the abundant summer rains, are very suitable for maize. The limits of the maize region describe an arc of a circle round Rosario with a radius of 60 to 100 miles. They do not quite reach the frontier of Cordoba in the west, and they leave out the entire south-western corner of the Santa Fe province. The maize belt touches the Parana between 32 deg. S. lat. and the Baradero. In the north it passes suddenly into the region of the colonies. In the south, on the other hand, there is at the edge of the corn belt an extensive transition-area, where maize and wheat occupy pretty much the same surface; it stretches as far as the Rio Salado de Buenos Aires.