Lewis Spence,
The Myths of the North American Indians
“ The conjurer often shuts himself in his tent and abstains from food for days till his earthly grossness thins away, and the spirits and things unseen are constrained to appear at his behest. The young Tinneh care for none of these things; the strong limb and the keen eye, holding their own well in the jostle of life, mock at the terrors of the invisible; but as the pulses dwindle with disease or age, and the knees strike together in the shadow of impending death, the shaman is hired to expel the evil things of which a patient is possessed. ”
