R. Chanina: The Torah's measurement of a Log is the same as the old measuring vessel used in Tzipori for measuring Murius.

R. Yona: I recognize this measuring vessel and in the house of R. Yanai they use it to measure honey.

Beraisa: The old measuring vessel of Tiveria is the size of the Torah's Revi'is.

Question (R. Yochanan): This is actually our current measuring vessel, so why did the Beraisa refer to it as old? Rather, originally it was smaller and they increased its size and then later reduced it to its original size - this is why it was referred to as the old measure, to teach that a Revi'is is the size of the original measure rather than the bigger one. (Note: This entry follows the explanation of Rav Chaim Kanievski.)

Question: What is the size of a cup that holds a Revi'is?

R. Yosa quoting R. Yehuda bar Pazi/R. Yosi bei R. Bun quoting Shmuel: 2 fingerbreadths by 2 fingerbreadths by 1 5/6th fingerbreadths.

Beraisa - R' Noson: On Shabbos, if one took out congealed wine the size of a Kzayis into a public domain, he is liable (as a Kzayis of solid corresponds to a Revi'is of liquid).

Rabbanan of Kisarin/R. Yosi bei R. Bun quoting R. Yochanan: R. Noson follows the opinion of R. Shimon. Just as R. Shimon said that the required quantity of wine is a Revi'is, so R. Noson said that the size is a Kzayis.