One important remark has been made, that a comparatively small variety of species is found in the older rocks, although of some particular ones the r… - Robert Chambers

The whole history of lamentation, and mourning, and woe, from the beginning of the world—the funeral ceremonies in which the living symbolize the intensity of their grief—the monuments they rear to tell the world for centuries to come of the calamity they have suffered from the stroke of death—are enduring attestations that it is not so much in the removal of one sentient and living being off the earth, as in the change—the calamitous change to the survivors—that death is truly the King of Terrors.

In most instances, affectionate relatives and kind friends would wish to prolong the existence of the individual who has reached that age; but if we look at the happiness of mankind in general, we shall find reason to believe that, like all the other general principles of nature, this one carries the impress of an all-wise and beneficent Creator; and that if man had it in his power to alter the arrangement, it may be questioned if he could improve it. At this age the great desires of life are generally accomplished, and the tired laborer in the hardest fields of exertion, which are those of the intellect, has had some years of quiet meditation on the long battle of life to which his days of energy and hope were devoted. The world has, in general, little more use for him; and should he—however meritorious his services, however honored his gray hairs—too long remain an actual living man, seeming to fill a part of the arena in which younger and abler combatants are looking for places, the consciousness of being honored and beloved may give way before the suspicion that he has become an encumbrance to the circle he once adorned.

Zoophyta, polyparia, crinoidea, conchifera, and crustacea are the orders of the animal kingdom thus found in the earliest of earth's sepulchres.