I felt the heat of this day more severely than that of any other this summer. It was scorching in the midst of brick walls. Returned to Boston in the morning and passed the day mostly at the Office doing nothing. Took a cold bath but it heated me so much to return from it that I derived little benefit from it. Thomas passed much of the afternoon with me. I had intended remaining in Boston, but the heat and the impossibility of getting lodgings prevailed over the Dame Blanche.1 Rode to Quincy. Moonlight.