been dragged by, the lizard, with uplifted head, continued gazing after
it with the greatest astonishment. Never had such a wonderful snake
crossed its path before!

Molina, in his _Natural History of Chill,_ says the vizcacha uses its
tail as a weapon; but then Molina is not always reliable. I have
observed vizcachas all my life, and never detected them making use of
any weapon except their chisel teeth. The tail is certainly very
curious, being straight at the base, then curving up outwardly, and
slightly down again at the tip, resembling the spout of a china teapot.
The under surface of the straight portion of the base is padded with a
thick, naked, corneous skin; and, when the animal performs the curious
sportive antics in which it occasionally indulges, it gives rapid
loud-sounding blows on the ground with this part of the tail. The
peculiar form of the tail also makes it a capital support, enabling the
vizcacha to sit erect, with ease and security.

The frog is a most timid, inoffensive creature, saving itself, when
pursued, by a series of saltatory feats unparalleled amongst
vertebrates. Consequently, when I find a frog, I have no hesitation in
placing my hands upon it, and the cold sensation it gives one is the
worse result I fear. It came to pass, however, that I once encountered a
frog that was not like other frogs, for it possessed an instinct and
weapons of offence which greatly astonished me. I was out snipe shooting
one day when, peering into an old disused burrow, two or three feet
deep, I perceived a burly-looking frog sitting it. It was larger and
stouter-looking than our common Rana, though like it in colour, and I at
once dropped on to my knees and set about its capture. Though it watched
me attentively, the frog remained perfectly motionless, and this greatly
surprised me. Before I was sufficiently near to make a grab, it sprang