Note 15 — O-KO-PEE. A MIGHTY HUNTER OF THE SIOUX.
Reading edition
It is customary, when an Indian advances towards manhood, for him to lose the name bestowed upon him in childhood, obtaining another by some peculiarity of appearance or conduct, some daring action or violent passion; thus, Sleepy Eyes, is the name of a chief among the Sioux, from the drowsy expression of his countenance.