A continued discussion of the laws regards the roots of a tree.
Rav Bar Hayim explains the pesuk כאפיקים בנגב (from shir haMaalot) through a story from his time in the army.
The Jews of the Yerushalmi spoke with briefer words
The Yerushalmi tries a few times to solve a question, but it sooner to leave it unanswered than the Bavli would.
Who is the Rashash? He attempts to answer the final question of the gemara.
How do these laws extrapolate to other trees?
How were roofs build in the time of the mishna?