REVIEW QUESTIONS ON GEMARA AND RASHI
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous dafEruvin 55
(a) How does one ascertain the borders of ...
1. ... a square (or rectangular) town (from which to measure two thousand
Amos), if a house protrudes from one of the walls?
(b) Why does the Beraisa need to say that if the town is long, one measures
it as it is? Would we perhaps think that it should be shortened?
2. ... a town that is shaped like a bow or like a capital L.
(c) Why does it need to say that, if it is a square, one does not add
Why would we have thought that we do?
(d) And why does it need to say that if *two* houses protrude from the wall,
then we consider as if a string was stretched over both of them? If we say
this with regard to *one* house which protrudes from the wall, then it
surely goes without saying that we say it with regard to two?
(a) When will a town that is shaped like a bow, measure two thousand Amos,
not from the string, but from the bow?
Answers to questions
(b) How does Rav Huna reconcile this (statement of his) with another
statement, where he ruled that a town whose northern and southern walls were
breached one hundred and forty one and a third Amos at exactly the same
point (leaving a large gap which cuts right through the town), has the Din
of two individual towns regarding the Din of Eruv?
(a) What is the significance of a hundred and forty one and a third Amos?
(b) Under which condition will that breached town still be considered one
town with regard the Din of Eruv?
(c) Why did Rav Huna find it necessary to issue this ruling, seeing as he
has already taught the same thing with regard to *two* towns that were built
next to each other?
(d) Chiya bar Rav disagrees with Rav Huna. What does *he* say with regard
to the town which is breached on two opposite sides?
(a) According to Rabah bar Rav Huna, a town shaped like a bow reckons two
thousand Amos from the string, only if the distance between the bow and the
string in not more than two thousand Amos.
Why is that?
(b) What does his son Rava hold?
(c) On what grounds does Abaye corroborate Rava Brei de'Rabah bar Rav Huna's
(a) 'Gedudi'os' that are ten Tefachim tall extend the limits of the town,
says the Mishnah.
What exactly are Gedudi'os?
(b) The Gemara is uncertain whether Gedudi'os with only *two* walls but
which have a roof, will have the same Din in this regard.
Is there a proof
from the Beraisa, which specifically precludes tombstones (in the form of an
Ohel) with only two of the four walls remaining, from the Din of Gedudi'os?
(c) What is the Gemara's conclusion?
(a) A bridge, a cemetery, a Shul, a church, and stables or storehouses in
the fields will also extend the town's dimensions, but only if they all meet
a common condition. What is it?
(b) Do the following extend the town's dimensions:
(c) What purpose does a house in the sea serve?
- A house in the sea?
- A cave, a wall, a dove-cot?
(d) Why is a ship with cabins any worse than a house in the sea in this
(a) How do we reconcile *this* Beraisa, which precludes a cave from the Din
of 'Gedudi'os', with another Beraisa, which gives a cave the Din of
(b) If we are speaking when a house is built at the entrance of the cave,
then what is the Chidush, since even without the cave, the house will add to
the town's dimensions?
(a) If a village consists of wigwam-like huts or tents, from where does one
reckon the two thousand Amos?
(b) Under which circumstances did our fathers in the desert sometimes had to
walk three Parsah - even on Shabbos? Why is this a Kashya on what we just
(c) Why in fact, was Machaneh Yisrael different?
(d) Under which circumstances will even a town or a village of tents be
considered a town, concerning the Din of Eruv?
(a) The life of nomads is no life.
Why should one not marry their
(b) According to Ula, this is because they have no bathhouses.
What are the
ramifications of this statement?
(c) How does *Rebbi Yochanan* explain the prohibition of marrying their
(d) What is the difference between the two reasons?
(a) The Beraisa does not consider inferior bread, freshly-made beer and
vegetables to be healthy.
Answers to questions
Then what is Rav Huna referring to when he
forbids Talmidei-Chachamim to live in a town which does not have vegetables?
(b) Which part of the radish is healthy, and which part is not?
(c) When is even the root unhealthy?
(d) What is Rav quoted as saying about someone who lives in a town with many