The Naturalist in La Plata

er sombre: and doubtless the depressed and melancholy feeling the pampa inspires in those who are unfamiliar with it is due in a great measure to the paucity of life, and to the profound silence. The wind, as may well be imagined on that extensive level area, is seldom at rest; there, as in the forest, it is a "bard of many breathings," and the strings it breathes upon give out an endless variety of sorrowful sounds, from the sharp fitful sibilations of the dry wiry grasses on the barren places, to the long mysterious moans that swell and die in the tall polished rushes of the marsh. It is also curious to note that with a few exceptions the resident birds are comparatively very silent, even those belonging to groups which elsewhere are highly loquacious. The reason of this is not far to seek. In woods and thickets, where birds abound most, they are continually losing sight of each other, and are only prevented from scattering by calling often; while the muffling effect on sound of the close foliage, to' which