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The evolution of the wonderfully varied societies found among insects begins with the solitary insect itself, just as this, viewed as a cell-community, originates from one-celled beginnings like Amoeba through progressive evolution in time.
We are asked to believe that some plants became animals, or some animals became plants, or that all plants and animals came from the one germ they allowed God to create. They say that all species developed by growth, but do not explain why we still have the one-celled amoeba, the microscopic bacilli of plant life, and the microscopic species of animal life.
However, having suffered a few failures, Simanovsky still obstinately continued to act upon the mind and imagination of Liubka. He tried to explain to her the theory of the origin of species, beginning with an amoeba and ending with Napoleon. Liubka listened to him attentively, and during this there was an imploring expression in her eyes: "When will you stop at last?"
The displacements of an amoeba in a drop of water would be comparable to the motion to and fro of a grain of dust in a draughty room.
A young lady looks forward with pleasure, I fancy, to release from " "Is the amoeba a some horrid bug, I suppose?" interrupted Aunt Frank; "and you er do things to it in that laboratory? How can you? The very thought of such a place! It makes me shiver!" "Oh, but you should see it, so clean and bright; the laboratory's simply beautiful!"
This process of growth and division may go on for many generations, but cannot continue indefinitely unless there is a conjugation of two separate individuals. This process of conjugation is just the opposite to that of division. Two amoeba flow together and become one.
But this absence of death in other rather distant relatives of the amoeba, and probably in the amoeba itself, holds true only provided that, after a series of self-divisions, reproduction takes place after another mode. Two rather small and weak individuals fuse together in one animal of renewed vigor, which soon divides into two larger and stronger descendants.
Thus an amoeba is aware of a piece of meat which it wants to eat. It has nothing except its own body to fling at the meat and catch it with.
The success of Hydra in its ceaseless struggle to live depends wholly upon the cooperation of its differentiated cell-units, now no longer equivalent in function to the all-powerful Amoeba, although each one must be kept alive until its task is done, or the whole association would have no place in nature.
The life of the amoeba or any other unicellular organism is low compared with the life in more complex organisms, like the ant or bee. Man is the most highly developed living organism on the globe; yet his body is built up of innumerable cells, each of which might be described as a tiny life in itself.
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