absent, but it is only to recollect herself with additional, as well as recruited vigour, in some after and higher state; as if the sleep of powers, as well as of bodies, were the season and condition of their growth. Accordingly, we find these instincts again, and with them a wonderful synthesis of fish and insect, as a higher third, in the feathered inhabitants of the air. Nay, she seems to have gone yet further back, and having given B + C = D in the birds, so to have sported with one solitary instance of B + D = A in that curious animal the dragon, the anatomy of which has been recently given to the public by Tiedemann; from whose work it appears, that this creature presents itself to us with the wings of the insect, and with the nervous system, the brain, and the cranium of the bird, in their several rudiments.
The synthesis of fish and insect in the birds, might be illustrated equally in detail with the former; but it will be sufficient for our purpose, that as in both the former cases, the insect and the fish, so here in that of the birds, the powers are under the predominance of irritability; the sensibility being dormant in the first, awakening in the second, and awake, but still subordinate, in the third. Of this my limits confine me to a single presumptive proof, viz., the superiority in strength and courage of the female in the birds of prey. For herein, indeed, does the difference of the sexes universally consist, wherever both the forces are developed, that the female is characterised by quicker irritability, and the male by deeper sensibility. How large a stride has been now made by Nature in the progress of individuation, what ornithologist does not know? From a multitude of instances we select the most
