2
This, roughly speaking, is the recapitulation which occurs before our eyes, but of which, no doubt, many incidents escape us or do not sufficiently attract our attention, for it is possible that they reproduce types with which we are not acquainted and which have not even left geological traces, seeing that the number of species which have disappeared is infinitely greater than that of the species which we know.
Dr. Hélan Jaworski may therefore very justly assert that the embryonic period corresponds with the geological period. And, even as, in the great terrestrial evolution, we observe the gradual disappearance of the armour-plated fishes, the monstrous reptiles and the gigantic mammals, so, in the minor embryonic evolution, we see the primitive kidney, the dorsal cord and the umbilical vesicle dissolve, while the liver diminishes and the disproportion between the head and the rest of the body is lessened. In a word, nature is learning wisdom, recognizing her errors, profiting by her experience, doing her best to repair her blunders and acquiring a sense of equilibrium, economy and form.
Dr. Jaworski finds other analogies between the geological period corresponding with man’s appearance upon earth and the birth of the child, analogies which are ingenious, but rather more hazardous. Birth is in fact preceded by a miniature deluge, caused by the tearing of the foetal envelopes, which allow the amniotic fluid to escape. Then the child, at the moment of entering into life, suddenly experiences a sort of glacial period; it passes, in fact, from an environment with a temperature of over 98° to the outer air, which is barely 60° or 65°. The sense of cold is so terrible that it wrests a first cry of suffering from the new-born child.