I notice it thus, because it suggested to me a reflection. Looking at this bill, I asked myself how Darwin's theory comported with it. "The struggle for life,"--are all the forms of organic existence due to that? But how did the struggle for life cut these grooves, paint these ornamental lines? "Beauty is its own excuse for being"; and that Nature respects beauty is, to my mind, nothing less than fatal to the Darwinian hypothesis. That his law exists as a _modifying_ influence I freely admit, and accredit him with an important addition to our thought upon such matters; that it is the sole formative influence I shall be better prepared to believe when I see that beauty is not regarded in Nature, but is a mere casual attendant upon use. The artist Greenough did, indeed, strenuously maintain this last. But the sloth and the bird-of-paradise are equally useful to themselves; if beauty were but an aspect of use, these should be equally comely in our eyes. No; "the struggle for life" has not grooved the bill of the auk, and painted the tail of the peacock, any more, so far as I can see, than it has given to evening and morning their scarlet and gold. And so my auk said to me, "Any attempt to string existence upon a single thread has failed and will fail, unless it be that thread which man can never formulate, never stretch out into a straight line,--the Eternal Unity, God." These birds have a catlike instinct of fidelity to old haunts, and, having once chosen a habitat, adhere to it, despite many a year of persecution. They prefer inaccessible cliffs, on every projecting shelf and jut of which the eggs are laid, but also inhabit islands where are many clefts, fissures, and holes made by tumbled masses of rock. This at which we had arrived was not much more than a hundred feet high; and the cliffs in which it terminated on one side were scarcely to be named inaccessible. The number of birds upon it seemed to our novice-eyes immense, but at a later period would have seemed trivial. They are always flying about the shores, and have also a laudable curiosity, which leads them to investigate when any strange form appears or any strange noise is made in the neighborhood of their homes.