1. Rebbi Eliezer discusses laws pertaining to beehives.
2. The Chachamim argue with Rebbi Eliezer's position that a beehive has the status of land.
3. Rebbi Elazar explains why Rebbi Eliezer rules that a beehive has the status of land.
4. There is a dispute about the status of a metal shelf that was fastened to a wall.
5. The precept that water that entered a vessel may cause invalidate a Mikvah is mid'Rabanan.
A BIT MORE
1. For example, a beehive has the status of land, one may write a Pruzbul if the borrower owns a beehive (or any other land), it cannot become Tamei when it is in its place, and a person who mistakenly takes honey from it on Shabbos is liable for a Korban Chatas.
2. They therefore disagree with all of his statements listed above regarding a beehive.
3. Rebbi Eliezer's opinion is based on the verse, "And he dipped it in the Ya'aros Devash (forest of honey)." Just as a forest is considered land, a beehive is considered land.
4. Rebbi Eliezer: It is now considered Tahor since it is fastened to the wall. Chachamim: It is still Tamei Since it was once a shelf (or tray).
5. However, there is much discussion about when it is truly a Rabbinic issue and when it is a Torah issue, as there are many ways that such water can invalidate a Mikvah (see Tosfos 66a, DH Michlal).