With my thoughts full of the past, while my senses kept watch of the present, I returned slowly to the "incline," where I had five minutes to wait for a downward car. It had been a good day, a day worth remembering; and just then there came to my ear the new voice for which I had been on the alert: a warbler's song, past all mistake, sharp, thin, vivacious, in perhaps eight syllables,--a song more like the redstart's than anything else I could think of. The singer was in a tall tree, but by the best of luck, seeing how short my time was, the opera-glass fell upon him almost of itself,--a hooded warbler; my first sight of him in full dress (he might have been rigged out for a masquerade, I thought), as it was my first hearing of his song. If it had been also my last hearing of it, I might have written that the hooded warbler, though a frequenter of low thickets, chooses a lofty perch to sing from. So easy is it to generalize; that is, to tell more than we know. The fellow sang again and again, and, to my great satisfaction, a Kentucky joined him,--a much better singer in all respects, and much more becomingly dressed; but I gave thanks for both. Then the car stopped for me, and we coasted to the base, where the customary gang of negroes, heavily chained, were repairing the highway, while the guard, a white man, stood over them with a rifle. It was a strange spectacle to my eyes, and suggested a considerable postponement of the millennium; but I was glad to see the men at work. Two days afterward (May 10), in spite of "thunder in the morning" and one of the safest of weather saws, I made my final excursion to Lookout, going at once to the warblers' pines. There were few birds in them. At all events, I found few; but there is no telling what might have happened, if the third specimen that came under my glass--after a black-poll and a bay-breast--had not monopolized my attention till I was driven to seek shelter. That was the day when I needed a gun; for I suppose it must be confessed that even an opera-glass observer, no matter how much in love he may be with his particular method of study, and no matter how determined he may be to stick to it, sees a time once in a great while when a bird in the hand would be so much better than two in the bush that his fingers fairly itch for something to shoot with. From what I know of one such man, I am sure it would be exaggerating their tenderness of heart to imagine observers of this kind incapable of taking a bird's life under any circumstances. In fact, it may be partly a distrust of their own self-restraint, under the provocations of curiosity, that makes them eschew the use of firearms altogether.