Buttonwood not open. Celandine pollen. Butternut pollen, apparently a day or two. Black oak pollen yesterday, at least. Scarlet oak the same, but a little later. The staminate flowers of the first are on long and handsome tassels for three or four inches along the extremities of last year’s shoots . . .

  P.M.—To Cliffs.

  Wind suddenly changed to south this forenoon, and for the first time I think of a thin coat. It is very hazy in consequence of the sudden warmth after cold, and I cannot see the mountains . . .