Heart of Darkness

The Night Country By Loren Eiseley

Scribners, 236 pages, $7.95 Loren Eiseley sees with the eyes of a child, and he hears with the ears of a child and more than most ofusheis able to look into the ancient darkness of life—watching and speaking to black beetles, shrewd rats, angry owls and burrowing rodents. He is a naturalist and an archeologist, a sort of mystic philosopher and a scientist.