The problem examined in this work is whether the land rights originally held by Canada's Indigenous peoples survived the process whereby the British Crown acquired sovereignty over their territories, and, if so, in what form. The question, although historical in nature, has important implications for current disputes involving Aboriginal land claims in Canada. It is considered here largely as a matter of first impression. The author has examined the historical evidence with a fresh eye, in the light of contemporaneous legal authorities. Due consideration is given to modern case-law, but the primary focus is upon the historical process proper.