Thoreau writes in his journal:
No dew even where I keep my boat. The driest night yet, threatening the sultriest day. Yet I see big crystalline drops at the tips or the bases of the pontederia, leaves. The few lilies begin to open about 5 . . .
P.M.—To Conantum.
The warmest day yet. For the last two days I have worn nothing about my neck. This change or putting off of clothing is, methinks, as good an evidence of the increasing warmth of the weather as meteorological instruments. I thought it was hot weather perchance, when, a month ago, I slept with a window wide open and laid aside a comfortable, but by and by I found that I had got two windows open, and to-night two windows and the door are far from enough . . .