Parents are treated in the same manner when helpless and infirm.

[Note 77 at end of para.] In 1839 I found an aged man left to die, without fire or food, upon a high bare hill beyond the Broughton.

In 1843 I found two old women, who had been abandoned in the same way, at the Murray, and although they were taken every care of when discovered, they both died in about a week afterwards.

No age is prescribed for matrimony, but young men under twenty-five years of age do not often obtain wives, there are exceptions, however, to this: I have seen occasionally young men of seventeen or eighteen possessing them.

When wives are from thirty-five to forty years of age, they are frequently cast off by the husbands, or are given to the younger men in exchange for their sisters or near relatives, if such are at their disposal.
[Note 77: "Practised by the American Indians."-- Catlin, vol.i.p.