The source of these insects is not positively known. They come from the north, in what is known as the Chaco, which is a vast wilderness little known, and covering tens of thousands of square miles. Some think that they come from the state of Matto Grosso, in Brazil, which is an empire in itself just north of the Chaco. Accurate knowledge of the location of their hatcheries is yet wanting. The insect is fortunate in having chosen the wild and unexplored portion of the country for its home. The wisest and surest method of getting rid of these locusts, in my opinion, would be to search out this place and destroy them there. In that way it might be possible within a very few years to absolutely rid the country from this scourge of locusts as it is to-day. [Illustration: AMONG THE HILLS OF CORDOBA] No one knows any good purpose that the locust serves unless a chastening against pride and vain glory. They are relished by the ostriches and poultry, who devour them greedily. Chickens will enjoy a hearty meal upon them, but the result is that the eggs are ruined for edible purposes. The interior becomes dark, almost a wine colour, and they are given a fishy flavour, which is altogether unpalatable. Thus the malice of the locust towards man holds fast even in death, and makes him useless as food for the fowls which frequent every barn-yard. It is little wonder that the far-reaching cry comes up from Argentina for help and deliverance from this awful pest. Adjoining Santa Fé on the west is the still larger province of Cordoba. The eastern part of this province is level, but the surface begins to rise and is broken here and there by ridges and hills. During the summer season many seek the hills of Cordoba to escape the heat of the summer. There is a fine train service from Buenos Aires to Cordoba. This city is about two hundred and forty-six miles beyond Rosario. The Central Argentine runs through trains and makes the trip in about sixteen hours. The railway reaches the hills quite a while before the city of Cordoba is sighted, and there are a couple of little branches that run to Alta Gracia and Rio Segundo respectively, each of which boasts a summer colony. The former is quite noted as a health resort.