Sloth and Camel in Dry Caves
When we turn from the mastodon preserved in wet peat bogs, we come upon the camel and the sloth in dry caves. There, buried in dust, are skin, hair, and ligaments, as well as bone. Not a great deal of such remains exist, however, and only in a few caves—and this time “few” means less than five. It happens that dry and dust-filled caves are almost as good embalmers as the bogs of the Great Lakes or the ice of Siberia and the Alaska muck beds. “In a perfectly dry limestone cave,” says Howard, “covered by three to ten feet of dust, there seems to be no reason why the hair and tissue of the sloth, camel, horse, or bison could not have been preserved for several thousands of years.”[16]