Reference for Eruvin 35:11

אפי' תימא ר' יהודה בן בבא מאי ביראות ביראות דעלמא

for WELLS but not for cisterns?<span class="x" onmousemove="('comment',' Even if they were public; contrary to R. Akiba who does permit such boards for public cisterns.');">²⁹</span> - It may be said [to be in agreement] even with R'Akiba, for it only taught of a well of living water because [the law in its case is] definite, there being no difference whether it was public or private, but it did not teach concerning a cistern containing collected [water] since [the law in its case] is not definite.<span class="x" onmousemove="('comment',' There being in agreement with R. Akiba, a difference between a public, and a private one.');">³⁰</span> Need it be suggested that our Mishnah is at variance with a ruling of R'Judah B'Baba; for we learned, R'Judah B'Baba ruled: Strips of wood may be set up round a public well only',<span class="x" onmousemove="('comment',' Infra 22b.');">²⁷</span>

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