Science: Animals Unfound

No one believed the 17th century Dutch explorers who reported seeing an animal as big as a man, with a head like a deer and a long tail like an alligator, that stood on its hind legs like a bird and hopped like a frog. The kangaroo was real, nevertheless, and also real (probably or possibly) are other strange animals that have been seen only rarely by civilized man. This is the conviction of French-born Bernard Heuvelmans, and his book, On the Track of Unknown Animals (Hill & Wang; $6.95), makes fine reading for...