Birds have the homing instinct. The robin that nested at your door may go south in the autumn, but will come back to his old nest the next spring. In September, flocks of many of our birds fly south, often over a thousand miles of open sea, but they do not lose their way. The homing pigeon, confused by new sounds on a long journey in a closed box, circles for a moment then heads almost unerringly for home. The bee finds its hive while the wind waving the grasses and trees blots out every visible guide to its whereabouts. This homing sense is slightly developed in man, but he supplements his meagre equipment with instruments of navigation.
We need this instinct and our brain provides the answer. The tiny insects must have microscopic eyes, how perfect we do not know, and the hawks, the eagle and the condor must have telescopic vision. Here again man surpasses them with his mechanical instruments. With his telescope he can see a nebula so faint that it requires two million times his vision, and with the electron microscope he can see hither to invisible bacteria and, so to speak the little bugs that bite them.
If you let old Dobbin alone he will keep to the road in the blackest night. He can see, dimly perhaps, but he notes the difference in temperature of the road and the sides with eyes that are slightly affected by the infra-red rays of the road. The owl can see the nice warm mouse as he runs in the cooler grass in the blackest night. We turn night into day by creating radiation in that short octave we call light.
The honey-bee workers make chambers of different sizes in the comb used for breeding. Small chambers are constructed for the workers, larger ones for the drones, and special chambers for the prospective queens. The queen bee lays unfertilized eggs in the cells designed for males, but lays fertilized eggs in the proper chambers for the female workers and the possible queens. The workers, who are the modified females, having long since anticipated the coming of the new generation, are also prepared to furnish food for the young bees by chewing and predigesting honey and pollen. They discontinue the process of chewing, including the predigesting, at a certain stage of the development of the males and females, and feed only honey and pollen. The females so treated become the workers.
For the females in the queen chambers the diet of chewed and predigested food is continued. These specially treated females develop into queen bees, which alone produce fertile eggs. This process of reproduction involves special chambers, special eggs, and the marvelous effect of a change of diet. This means anticipation, discretion, and the application of a discovery of the effect of diet.
These changes apply particularly to a community life and seem necessary to its existence. The knowledge and skills required must have been evolved after the beginnings of this community life, and are not necessarily inherent in the structure or the survival of the honey bee as such. The bee, therefore, seems to have out stripped man in knowledge of the effects of diet under certain conditions.
The dog with an inquiring nose can sense the animal that has passed. No instrument of human invention has added to our inferior sense of smell, and we hardly know where to begin to investigate its extension. Yet even our sense of smell is so highly developed that it can detect ultra-microscopic particles. How do we know that we all get the same reaction from any single odour? The fact is that we do not. Taste also gives a very different sensation to each of us. How strange that these differences in perception are hereditary. All animals hear sounds, many of which are outside our range of vibration, with an acuteness that far surpasses our limited sense of hearing. Man by his devices can now hear a fly walking miles away as though it was on his eardrums, and with like instruments record the impact of a cosmic ray.
In some species, the workers bring in little seeds to feed the other ants through the winter. The ants establish what is known as the grinding room, in which those which have developed gigantic jaws especially built for grinding, prepare the food for the colony. This is their sole occupation. When the autumn comes and the seeds are all ground, 'the greatest good for the greatest number 'requires that the food supply be conserved and as there will be plenty of grinders in the new generation, the soldier ants kill off the grinders, satisfying their entomological conscience by believing perhaps that the grinders had had reward enough in having had first chance at the food while they ground.
One of the water spiders fashions a balloon-shaped nest of cob web filaments and attaches it to some object under water. Then she ingeniously entangles an air bubble in the hairs of her underbody, carries it into the water, and releases it under the nest. This performance is repeated until the nest is inflated, when she proceeds to bring forth and raise her young safe from attack by air. Here we have a synthesis of the web, engineering, construction, and aeronautics. Chance perhaps, but that still leaves the spider unexplained.
The young salmon spends years at sea, then comes back to his own river, and, what is more, he travels up the side of the river into which flows the tributary in which he was born. The laws of the States on one side of the dividing stream may be strict and the other side not, but these laws affect only the fish which may be said to belong to each side. What brings them back so definitely?
If a salmon going up a river is transferred to another tributary he will at once realize he is not in the right tributary and will fight his way down to the main stream and then turn up against the current to finish his destiny. There is, however, a much more difficult reverse problem to solve in the case of the eel. These amazing creatures migrate at maturity from all the ponds and rivers everywhere, those from Europe across thousands of miles of ocean, all go to the abysmal deeps south of Bermuda. There they breed and die.
The little ones, with no apparent means of knowing anything except that they are in a wilderness of water, start back and find their way to the shore from which their parents came and thence to every river, lake and little pond, so that each body of water is always populated with eels. They have braved the mighty currents, storms and tides, and have conquered the beating waves on every shore. They can now grow and when they are mature, they will, by some mysterious law, go back through it all to complete the cycle.
Where does the directing impulse originate? No American eel has ever been caught in European waters and no European eel has ever been caught in American waters. Nature has also delayed the maturity of the European eel by a year or more to make up for its much greater journey. Do atoms and molecules when combined in an eel have a sense of direction and willpower to exercise it?
A female moth placed in your attic by the open window will send out some subtle signal. Over an unbelievable area, the male moths of the same species will catch the message and respond in spite of your attempts to produce laboratory odours to disconcert them. Has the little creature a broadcasting station, and has the male moth a mental radio set beside his antennae? Does she shake the ether and does he catch the vibration? The cricket rubs its legs or wings together, and on a still night can be heard half a mile away. It shakes six hundred tons of air and calls its mate. Miss Moth, working in a different realm of physics and, in apparent silence, calls quite as effectively. Before the radio was discovered, scientists decided it was odour that attracted the male moth. It was a miracle either way, because the odour would have to travel in all directions, with or without the wind. The male moth would have to be able to detect a molecule and sense the direction from whence it came. By a vast mechanism, we are developing the same ability to communicate, and the day will come when a young man may call his loved one from a distance and without mechanical medium and she will answer. No lock or bars will stop them. Our telephone and radio are instrumental wonders and give us means of almost instant communication, but we are tied to a wire and a place. The moth is still ahead of us, and we can only envy her until our brain evolves an individual radio Then, in a sense, we will have telepathy.
Vegetation makes subtle use of involuntary agents to carry on its existence - insects to carry pollen from flower to flower and the winds and everything that flies or walks to distribute seed. At last, vegetation has trapped masterful man. He has improved nature, and she generously rewards him. But he has multiplied so prodigiously that he is now chained to the plough. He must sow, reap, and store; breed and cross-breed; prune and graft. Should he neglect these tasks starvation would be his lot, civilization would crumble, and earth return to her pristine state.
Every cell that is produced in any living creature must adapt itself to be part of the flesh, to sacrifice itself as a part of the skin, which will soon be worn off. It must deposit the enamel of teeth, produce the transparent liquid in an eye, or become a nose or an ear. Each cell must then adapt itself in shape and every other characteristic necessary to fulfil its function. It is hard to think of a cell as right-handed or left handed, but one becomes part of a right ear, the other becomes part of the left ear. Some crystals that are chemically identical turn the rays of light to the left, others to the right. There seems to be such a tendency in the cells. In the exact place where they belong, they become a part of the right ear or the left ear and your two ears are opposite each other on your head, and not as in the case of a cricket, on your elbows. Their curves are opposite, and when complete, they are so much alike you cannot tell them apart. Hundreds of thousands of cells seem impelled to do the right thing at the right time in the right place.
Many animals are like a lobster, which, having lost a claw, will by some restimulation of the cells and the reactivation of the genes discover that a part of the body is missing and restore it. When the work is complete, the cells stop work, for in some way they know it is quitting time. A fresh-water polyp divided into halves can reform itself out of one of these halves. Cut off an angle worm's head and he will soon create a new one. We can stimulate healing but when will our surgeons, if ever, know how to stimulate the cells to produce a new arm, flesh, bones, nails, and activating nerves?
An extraordinary fact throws some light on this mystery of recreation. If cells in the early stages of development are separated each has the ability to create a complete animal. Therefore, if the original cell divides into two and they are separated, two individuals will be developed. This may account for identical twins but it means much more - each cell at first is in detail potentially a complete individual. There can be no doubt then, that you are you in every cell and fibre.
Certain ants, by means of instinct or reasoning (choose which you prefer), cultivate mushrooms for food in what may be called mushroom gardens, and capture certain caterpillars and aphids (plantlice). These creatures are the ants' cows and goats, from which they take certain exudations of a honey like nature for food. Ants capture and keep slaves. Some ants, when they make their nests, cut the leaves to size, and while certain workers hold the edges in place, use their babies, which in the larval stage are capable of spinning silk, as shuttles to sew them together. The poor baby may be bereft of the opportunity of making a cocoon for himself, but he has served his community. How do the inanimate atoms and molecules of matter composing an ant set these complicated processes in motion? There must be Intelligence somewhere.
Man Does Not Stand Alone Abraham Cressy Morrison 1944