Like all living things, these Moners have a desire for food, which their protoplasm first appropriates, then converts into available material. They thus grow and increase in size, but when they become too large to be comfortable they usually split into two, in obedience to the law of their being, and each half goes its own way as a living animal. This is the earliest form of parentage, the simplest form of reproduction. Thus yielding to this necessity of a separation of one into more than one, these Moners live on forever, or as long as the earth continues to support life, thus becoming immortal in the scientific sense in which the term is used to devote a continuance of the physical life on earth. They only and their nearest relatives, as simple in structure as themselves, achieve this stupendous result, for in such a division of their entire substance they know no loss, no death of any part, violence only being able to sunder them from life. They resolve themselves into their own offspring, and nothing perishes. PRIMITIVE LASSO-THROWERS. Every one knows that the long cord or thong, called the lasso, is the peculiar weapon of the South American hunter. Almost from his earliest childhood the young Gaucho learns to amuse himself with it, and as soon as he is able to walk takes great pleasure in catching young birds and other animals around his father’s hut, hurling the long lash with such dexterity that the noose drops over their bodies and brings them to his feet. Did we wish to select from among all the denizens of life the most brilliant, graceful, and sylph-like, whose very life-histories read more like the romance of poetry than sober reality, we would choose those which might be appropriately designated the lasso-throwers. Now among animals, as is only too well known, any weapons which they could be called upon to use must develop in their own bodies, and therefore it could hardly be suspected that a simple jelly-animal could be provided with a lasso ready grown in its own flesh. Yet it is so, for in that class of animals, which ranks just above the sponges, we discover a weapon of this kind as simple and as deadly, and far more wonderful in its action than any used by man.