Towards evening I espied several wigwams partly concealed by the wood before us.  On approaching nearer, I saw that they were very different from those to which I had been accustomed further east, where the Indian dwellings are constructed of birch-bark.  These were, however, much larger; the framework, consisting of long poles tied together at the top in a conical shape, was covered with the tanned skins of buffalo and deer, and was ornamented with figures of animals and men,--apparently hunting scenes.