B. We compared the baraitoth in the Tosefta to Tractate Shabbath, 16,( 17) 9, Yerushalmi, 7, 2,( 10, a) and the Bavli 143, b, and 74, a.

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The comparison leads us to the assumption that what we have is one baraita in several versions. We suggested separating the principal text of the baraita, which is common to all the versions, from the additions peculiar to each version. In the Yerushalmi we have an explanatory addition which indicates that only selecting all the heap of the same type requires a sin offering. In the Bavli- we think the original baraita was divided into two. The first part which deals with fruits that are scattered in a yard is explained as belonging to the category of" Ovadin de'chol" Prohibitions, the reason given for this is" he should not do things as they are done on weekdays". The second part of the baraita," choosing and eating etc."" remains dealing with the " Melacha" of choosing. The remnants of the first part of the baraita point to its original source, such as the expression," gathers and eats", which proves the immediateness of the eating in regard to" choosing". This bothered the Tosafot who removed the word" eating" from the baraita.

C. The terms" Ovadin de'chol"," Avsha milta"," Ziluta", are used interchangeably by many commentators. We showed that the source of this is already present in Rashi's commentary on the Talmud. In regard to the term" Tircha" there are those that differentiate it from the terms mentioned above, and there are those that do not. The question therefore is if we want a precise definition- do we define" Tircha" as part of " Ovadin de'chol" Prohibitions or not?

D. The Prohibition of taking measurements on the Sabbath and Yom- tov are generally related to the" Ovadin de'chol" Prohibitions. This appendix traces the source of this opinion. Some Tannaitic sources definitely indicate that it is prohibited to take measurements on the Sabbath and Yom- tov. Other sources such as the Mishna in

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