Sukkah 50 and Sukkah 50b, the water drawn on Friday for libation on Shabbat, the kind of container it had to be in, whether there was a maximum amount, and why it could not be left uncovered, and then the use of a flute as part of the Simhat Beit HaShoevah, whether musical instruments were necessary for accompanying sacrifices, and what that teaches about the utensils of the Temple generally.