Very warm,—45º at 2 P.M.

  There is a tender crust on the snow, and the sun is brightly reflected from it. Looking toward Billerica from the cross-road near White’s, the young oaks on the top of a hill in the horizon are very red, perhaps seven or eight miles off and directly opposite to the sun, far more red, no doubt, than they would appear near at hand, really bright red; but nowhere else that I perceive. It is an aerial effect, depending on their distance and elevation and being opposite to the sun, and also contrasted with the snowy ground . . .