We had a Lecture, this day from Mr. Williams upon Hydraulics. Studied Algebra, in the morning; as I have determined to do, a couple of hours every friday, and Saturday morning. Cranch came back to day; he stay'd to hear the Concert, which was given last Night. The musical Society, took it into their heads to Serenade, the Tutors, and a number of the gentlemen, belonging to the Town; they were out till 3 o'clock in the morning.