likewise their own special charm. In its lower course the river-bed is bounded by steep and rocky walls, rising in huge, towering blocks; but higher up there are tracts of pasturage, where the tall grass is enlivened by a sprinkling of gay blossoms, that indicate the close proximity of the sea. Scattered over the valley are farms and homesteads, and in every spot where there is any moisture a luxuriant growth of tropical shrubs, ferns, and creepers is sure to reveal itself, and in especial abundance upon the ruins of deserted dwellings.
In one of the recesses of the valley there is an establishment for washing wool by steam. At a very short distance from this I found a couple of vipers rolled up under a stone, in a hole that had probably been made by some great spider. I seized one of them with a pair of pincers, and transferred it with all speed to my flask, which already contained a heterogeneous collection of insects and reptiles. I had caught the male first, and succeeded in catching the female before she had time to realize that her mate was gone. I kept them both in my flask with its neck closed for a time, sufficiently long, as I supposed, to stupefy them thoroughly, and went on my way. Finding other specimens I opened my receptacle and deposited them there, but it did not occur to me that there was any further need to keep the flask shut. I had not gone far before I was conscious of a strange thrill passing over my hand; a glance was sufficient to show me what had happened; one of my captive vipers had made an escape, and
