I observe that in the cut by Walden Pond the sand and stones fall from the overhanging bank and rest on the snow below; and thus, perchance, the stratum deposited by the side of the road in the winter can permanently be distinguished from the summer one by some faint seam, to be referred to the peculiar conditions under which it was deposited.
The pond has been frozen over since I was there last.
Certain meadows, as Heywood’s, contain warmer water than others and are slow to freeze. I do not remember to have crossed this with impunity in all places. The brook that issues from it is still open completely, though the thermometer was down to eight below zero this morning.
The blue jays evidently notify each other of the presence of an intruder, and will sometimes make a great chattering about it, and so communicate the alarm to other birds and to beasts.