There is another mysterious ear which is a stumbling-block to the simple theory-monger. It is in fashion among a tribe of bats to which belongs the so-called vampire of India. This monster is fond of coming into your bedroom at midnight through the open windows, but not to suck your blood, for it has little in common with the true vampire of South America. It brings its dinner with it and hangs from the ceiling, "feeding like horses when you hear them feed." You hear its jaws working--crunch, crunch, crunch, but feel too drowsy to get up and expel it. When you get up in the morning there on your clean dressing table, just below the place where it hung, are the bloody remains of a sparrow, or the crumbs of a tree-frog. The servants will tell you that the sparrow was killed and eaten by a rat, but if you rise softly next night when you hear the sound of feeding, and shut the windows, you will find a goblin hanging from the ceiling in the morning, hideous beyond the power of words to tell. Its ears, thin, membranous and longer than its head, tremble incessantly. Inside of them is another pair, much smaller than the first, and tuned to their octave, I should guess, while two membranous smelling trumpets of similar pattern rise over the nose. What is the meaning of these repulsive instruments, and how does that strange beast catch sparrows? When it comes out after dark and quarters the garden, passing swiftly under and through the branches of trees, they are sound asleep hidden among the leaves, motionless and silent. But their flesh may be scented, and their gentle breathing heard if you have instruments sufficiently delicate. Then the ample wings may suddenly enfold the sleeping body, and the savage jaws grip the startled head before there is time even to scream. Without a doubt this is the secret of the vampire bat's ears. But to find food and flee death are not the only interests in life even to the meanest creature. There are social pleasures, family affections and fellowship, sympathy and co-operation in the struggles of life. And there is love. Omne adeo genus in terris hominumque ferarumque, Et genus aequoreum, pecudes, pictaeque volucres, In furias ignemque ruunt: amor omnibus idem. The chirping of the cricket, the song of the lark, the call of the sentinel crane, the watchword with which the migratory geese keep their squadrons together, the howling of jackals, the lowing of cows, the hum of the hive, the chatter of the drawing-room, and a hundred other voices in forest and field and town remind us that the voice and the ear are the pair of wheels on which society runs.