§ 4.
SOUL.
But hark! upon my sense
Comes a fierce hubbub, which would make me fear,
Could I be frighted.
(TO BE CONTINUED.)
From The St. James Magazine
EXTINCT SPECIES
The study of geology teaches us that our planet, has undergone many successive physical revolutions, the crust of it being made up of layer upon layer, after the manner of the successive peels of an onion. Each of these successive depositions constitutes the tomb of animal forms that have lived and passed away. Now it is a fresh-water or a marine shell that the exploratory geologist discloses; now the skeleton, or parts of a skeleton, from the evidence of which a comparative anatomist can reproduce, by model or picture, the exact forms. Occasionally science has to build up her presentment of animals that were, from the scanty evidence of their mere footfalls. As the poacher is guided to the timid hare, crouching in her seat, by the vestiges of her footprints on the snow, so the geologist can in many cases arrive at tolerably certain conclusions relative to the size and aspect of an extinct animal by the evidence of footsteps on now solid rock. And if it be demanded how it happens that now solid rocks can bear the traces of such soft impressions, the reply is simple. There evidently was a time when these rocks, now so hard and solid, were mere agglomerations of plastic matter, comparable for consistence to ordinary clay. It needs not even the weight of a footfall to impress material of temper so soft as this. The plashes of rain are distinctly visible upon many rocks now hard, and which have only acquired their consistence with the lapse of countless ages.
The geologist's notion of the word "recent" comprehends a span of time of beginning so remote that the oldest records of human history fade to insignificance by comparison. Since this world of ours acquired its final surface settlement, so to speak, numerous species have become extinct. The process of exhaustion has gone steadily on. It has been determined by various causes, some readily explicable, others involved in doubt. It is a matter well established, for example, that all northern Asia was at one time, not geologically remote, overrun by herds of mammoth creatures which, as to size, dwarf the largest elephants now existing; and which, among other points distinguishing them from modern elephants, were, unlike these, covered by a crop of long hair. Very much of the ivory manufactured in Russia consists of the tusks of these now extinct mammoths, untombed from time to time.
Tilesius declares his belief that mammoth skeletons still left in northern Russia exceed in number all the elephants now existing upon the globe. Doubtless the process of mammoth extinction was very gradual, and extended over an enormous space of time. This circumstance is indicated by the varying condition in which the tusks and teeth are found. Whereas the gelatine, or soft animal matter, of many specimens remains, imparting one of the characteristics necessary to the being of ivory, other specimens have lost this material, and mineral substances, infiltrating, have taken its place. The gem turquoise is pretty generally conceded to be nothing else than the fossilized tooth of some extinct animal—probably the mammoth.
Curiosity of speculation prompts the mind to imagine to itself the time when the last of these gigantic animals succumbed to influences that were finally destined to sweep them all from the earth. Had men come upon the scene when they roamed their native wilds? Were those wilds the same as now as to climate and vegetable growths? [{527}] Testimony is mute. Time silently unveils the sepulchred remains, leaving fancy to expatiate as she will on a topic wholly beyond the scope of mortal intelligence.