SMALL MAMMALS COLLECTED IN CANADA.
299
to dig out burrowing animals in winter, as the frost penetrates about four feet.
The gins used by the fur-trappers are, for the collector, much superior to those sold in England, as in the first place they have no teeth, and consequently do not tear the skin; and, secondly, the under part of the spring is put on with a ring round the jaws, like the upper part, so the trap can be bent either way to fit an angle in the hole or run.
