In these places a beaver appeared to have made a temporary home under the roots of some large tree, but the lake beaches would not answer for winter homes on account of the moving ice, which in storms would displace any stored wood. In the small streams the beavers made some dams that did not seem to be capable of economic use, - as if they were made for practice or amusement. The dams were made principally of alder poles and sticks. The soil is dug out above the dam and placed on the up- stream side of the dam. Some of the old dams appeared as if made almost altogether of soil, but probably the sticks were rotted away on the outside. Usually the ponds were deepend to about 3 or 3 1/2 feet all over. There were not many houses. Probably many more beavers live in burrows in the banks than live in houses. The trappers call these "bank beavers", and some thinks that they are either bachelors or a different kind of beaver. I see no reason for believing that they differ in any way. I think it is merely a matter of convenience and locality.