Maturin M. Ballou,
Foot-prints of Travel; Or, Journeyings in Many Lands
“ The herds live almost entirely on the so-called reindeer moss, but this failing them, they eat the young twigs of the trees. When the snow covers the ground to a depth of not more than three or four feet, these intelligent creatures dig holes in it so as to reach the moss, and guided by instinct they rarely fail to do so in just the right place. ”
