At birth a possum is little more than formed--the least mature babe among all of our mammals. It is only half an inch long, blind, deaf, naked, and so weak and helpless as to be unable to open its mouth or even cry. Such babies are rare. The smallest young mice you ever saw are as large as possums at their birth. They weigh only about four grains, the largest of them, and are so very tiny that the mother has to fasten each to a teat and _force_ the milk down each wee throat--for they cannot even swallow.
They live in this cradle for about five weeks, by which time they can creep out and climb over their mother. They are then about the size of full-grown mice, and the dearest of wood babies. They have sharp pink noses, snapping black eyes, gray fur, and the longest, barest tails. I think that the most interesting picture I ever saw in the woods was an old mother possum with eleven little ones clinging to her. She was standing off a dog as I came up, and every one of the eleven was peeking out, immensely enjoying this first adventure. The quizzing snouts of six were poked out in a bunch from the cradle-pouch, while the other five mites were upon their mother's back, where they had been playing Jack-and-the-beanstalk up and down her tail.
[Illustration: "She was standing off a dog."]
Historically, also, the possum is a conundrum. He has not a single relative on this continent, except those on exhibition in zoölogical gardens. He left kith and kin behind in Australia when he came over to our country. How he got here, and when, we do not know. Clouds hang heavy over the voyages of all the discoverers of America. The possum was one of the first to find us, and when did he land, I wonder? How long before Columbus, and Leif, son of Eric?
In his appetite the possum is no way peculiar, except, perhaps, that he takes the seasons' menus entire. Between persimmon-times he eats all sorts of animal food, and is a much better hunter than we usually give him credit for. Considering his slowness, too, he manages to plod over an amazing amount of territory in the course of his evening rambles. He starts out at dusk, and wanders around all night, planning his hunt so as to get back to his lair by dawn. Sometimes at daybreak he is a long way from home. Not being able to see well in the light, and rather than run into needless danger, he then crawls into the nearest hole or under the first rail-pile he comes to; or else he climbs a tree, and, wrapping his tail about a limb, settles himself comfortably in a forked branch quite out of sight, and sleeps till darkness comes again.