October 20th.—To-night, after leaving the hospital at 10 o'clock, (I had been on self-imposed duty some five hours, pretty closely confined,) I wander'd a long time around Washington. The night was sweet, very clear, sufficiently cool, a voluptuous halfmoon, slightly golden, the space near it of a transparent blue-gray tinge. I walk'd up Pennsylvania avenue, and then to Seventh street, and a long while around the Patent-office. Somehow it look'd rebukefully strong, majestic, there in the delicate moonlight. The sky, the planets, the constellations all so bright, so calm, so expressively silent, so soothing, after those hospital scenes. I wander'd to and fro till the moist moon set, long after midnight.