I would have thought that the term "first nation" referred more to the collective groups (i.e. the tribal councils are refered to as "first nations" as in the Manitoba "Assembly of First Nations". Here I would think that the term aboriginal (rather than indiginous) is in common use to refer to all groups, treaty and non-treaty indian, metis, dene and inuit -- that is to individuals of aboriginal descent whether or not they are members of first nations. Paul Phillips, Economics, University of Manitoba
