Between Bahia Blanca and the Andes lie three rich territories, all of them of goodly size. The most important one at present is La Pampa, which is directly west of the southern half of the province of Buenos Aires. It is about the size of Iowa and is rapidly being populated and stocked. A few years ago this territory was entirely undeveloped, and the gaucho in charge of wandering herds of sheep held full sway. Railway extensions brought private ownership, however, and now this territory bids fair to become one of the richest sections of the republic. The Western and Southern Railways are both continually pushing extensions across the fertile plains, and material prosperity everywhere follows. It now has a population of about one person to each square mile. According to statistics it is third in the number of sheep of all the territorial divisions, which is a good showing for a new country. Wheat and flax culture is also being rapidly developed. Toay and General Acha are the only towns of any importance, the latter of which is the capital. The territory of Rio Negro lies directly to the south of La Pampa and stretches from the Atlantic Ocean to the Andes. It lies between the Colorado and Chubut Rivers, and is watered by the Negro River as well. Along these rivers there are a number of _estancias_ already located, most of which are owned by companies and many by foreign landowners. A new branch of the Southern Railway has been constructed across this territory, following the Rio Colorado, the red river, for some distance, then cutting across to and following the Rio Negro, the black river, as far as the town of Neuquen. This has led to the establishment of other _estancias_ along those streams. All three of these rivers carry an abundance of water, and it will not be long until the question of irrigation will be taken up on the same lines as in our own western states; then there will be a development take place that will make this land blossom as the rose. The possibilities are there and the great demands for grains will sooner or later lead to this action. There is no doubt that those lands are fully as rich as any part of Colorado or California, and that is saying a good deal. The Rio Negro and Rio Chubut are both navigable for vessels of light draught for a considerable distance.