have some doubts; he might think that the stranger had, after all, only mocked him with the sight of a wonderful artificial gem, and that a close examination would have proved its worthlessness; but the naturalist can have no doubts: if he is an enthusiast, well acquainted with the fauna of his district, and has good eyesight, he knows that there is no mistake; for there it is, the new strange form, photographed by instantaneous process on his mind, and there it will remain, a tantalizing image, its sharp lines and fresh colouring unblurred by time.
Walking in some open forest glade, he may look up just in time to see a great strange butterfly--a blue Morpho, let us say, wandering in some far country where this angel insect is unknown--passing athwart his vision with careless, buoyant flight, the most sylph-like thing in nature, and all blue and pure like its aerial home, but with a more delicate and wonderful brilliance in its cerulean colour, giving such unimaginable glory to its broad airy wings; and then, almost before his soul has had time to feel its joy, it may soar away unloitering over the tall trees, to be seen no more.
But the admiration, the delight, and the desire are equally great, and the loss just as keenly felt, whether the strange species seen happens to be one surpassingly beautiful or not. Its newness is to the naturalist its greatest attraction. How beautiful beyond all others seems a certain small unnamed brown bird to my mind! So many years have passed and its image has not yet grown dim; yet I saw it only for a few moments, when it hopped out
Seen, and Lost. 36 5
from, the thick foliage and perched within two or three yards of me, not afraid, but only curious; and after peering at me first with one eye and then the other, and wiping its small dagger on a twig, it flew away and was seen no more. For many days I sought for it, and for years waited its reappearance, and it was more to me than ninety and nine birds which I had always known; yet it was very modest, dressed in a brown suit, very pale on the breast and white on the throat, and for distinction a straw-coloured stripe over the eye--that ribbon which Queen Nature bestows on so many of her feathered subjects, in recognition, I suppose, of some small and common kind of merit. If I should meet with it in a collection I should know it again; only, in that case it would look plain and homely to me--this little bird that for a time made all others seem unbeautiful.
Even a richer prize may come in sight for a brief period--one of the nobler mammalians, which are fewer in number, and bound to earth like ourselves, and therefore so much better known than the wandering children of air. In. some secluded spot, resting amidst luxuriant herbage or forest undergrowth, a slight rustling makes us start, and, lo! looking at us from the clustering leaves, a strange face; the leaf-like ears erect, the dark eyes round with astonishment, and the sharp black nose twitching and sniffing audibly, to take in the unfamiliar flavour of a human presence from the air, like the pursed-up and smacking lips of a wine-drinker tasting a new vintage. No sooner seen than gone, like a dream, a phantom, the quaint
366 The Naturalist in La Plata.
furry face to be thereafter only an image in memory.