CHAPTER XXXVII.

Lake Superior--Its shores and character--Geology--Brigade of boats--Dog and porcupine--Burrowing birds--Otter--Keweena Point--Unfledged ducks--Minerals--Canadian resource in a tempest of rain--Tramp in search of the picturesque--Search for native copper--Isle Royal descried--Indian precaution--Their ingenuity--Lake action--Nebungunowin River--Eagles--Indian tomb--Kaug Wudju.