(_β_) A profounder penetration into this correlation of the parts will, however, in the _second_ place, tend to give us that truer insight competent to determine from one of the parts the entire form to which it must belong. Cuvier is a famous example of such aptitude: a man of science, who by the examination of a single bone, whether fossil or otherwise, was able to specify at once by its characteristics the kind of animal to which it belonged. An excellent illustration this of _ex ungue leonem._ So from a claw or a thigh bone we may discover the conformation of the teeth, or _vice versa_ from the teeth that of the hip-bone, or that of the vertebral column. Such a profound synthesis of the type and the knowledge it implies carries us, however, beyond habitual experience only. We must assume, to render it possible, previous thought and the systematic arrangement of the isolated facts of science. Our example Cuvier had no doubt secured from previous experience a determinate content and some specific quality which prevailed in each generic conception, and asserted itself as a unity of principle in all particulars however distinct, and so enabled him to recognize their affinity. Such a specific quality is that of flesh-eating, which is then the determinating principle of the form of the other members of the organism to which it belongs. A flesh-eating animal requires teeth and jaws of exceptional vigour; when hunting it will require claws to seize its prey, mere hoofs are insufficient. Here in short is a quality which necessarily determines for us the form and principle of affinity among all the organic members. A conception of such a typical character is the ordinary one we form of the strength of an eagle or a lion. We may no doubt find something both beautiful and instructive[231] in this way of regarding the animal world, in so far as we derive from it some unified idea of its configuration, which is not a mere repetition of that unity in all the parts, but gives full value to the distinctions they possess. For all that it must be remembered the dominant factor of this survey is not the _perception of our senses_, but the generic _thought_ of our minds with which it is made to conform. Reviewed in this light we ought not to say that we find the object as such _beautiful_, but rather attribute that beauty to the _reflection_ of our own minds upon it. And if we examine these reflections more closely we shall find they are after all a deduction of our principle of unity from a limited aspect of the organic whole. We concentrate our attention, for example, on the mode in which it is nourished, _i.e._, whether such an animal is carnivorous or herbivorous. Through such a limited determination we are still removed from a vision of the coalescent unity of the whole we identified with the notion, the soul itself.