Study Guide Shabbat 100 in English and Hebrew Today's shiur is sponsored by Elizabeth Kirshner in memory of her Bubbie, Blanche Engel, Bluma bat Chaya Feiyga for her first yahrzeit. She was a supporter of Torah learning and a regular at many shiurim, and was so proud of my ongoing learning. May her neshama have an aliyah and may her memory continue to inspire.  The gemara deals with definitions of when an item is considered placed or taken from the ground - what if the item is in a liquid and is unstable? How do we view water in a pail - as resting on unstable water or is all the water viewed as one and considered resting in a stable manner in a utensil? How do we view oil that is settled on top of wine? The gemara goes back to the discussion regarding putting in item in a private domain and at the same moment filling the private domain so that it no longer has the requisite amount to be considered a private domain - is it cancelled. Does it depend on what is placed and how it is placed inside? Is there a different between water and solid items? The mishna deals with throwing items onto a wall. What if it fell into a hole in the wall that is not 4 handbreaths wide - is that hole viewed as part of the private domain and we view it as if it is 4 handbreaths wide since it is part of the wall which is that wide? Or do we view it by the size it is and maybe people in the public domain use the space, it is considered public? A mound 10 handbreaths tall in a pulibc domain - at what length of the incline it is considered a private domain? What if one threw an item less than or more than 4 cubits in public and it rolled to more thanor less than 4 cubits? What is the law regarding a puddle in a public domain - is it considered part of the public domain? On what does it depend? Why is the same sentence about the puddle repeatied in the mishna? The gemara brings 3 answers. How can one draw water while in a boat on Shabbat. Two potential solutions are brought.