Bechoroth, fol. 45, col. 1.

The regular period of gestation is either two hundred and seventy-one, two hundred and seventy-two, or two hundred and seventy-three days.

Niddah, fol. 38, col. 1.

Revere the memory of Chananiah ben Chiskiyah, for had it not been for him the Book of Ezekiel would have been suppressed, because of the contradictions it offers to the words of the law.  By the help of three hundred bottles of oil, which were brought up into an upper chamber, he prolonged his lucubrations, till he succeeded in reconciling all the discrepancies.

Shabbath, fol. 13, col. 2.

It is related of Johanan, the son of Narbai, that he used to eat three hundred calves, and to drink three hundred bottles of wine, and to consume forty measures of young pigeons by way of dessert. (Rashi says this was because he had to train many priests in his house.)

P’sachim, fol. 57, col. 1.

The keys of the treasury of Korah were so many that it required three hundred white mules to carry them.  These, with the locks, were said to be made of white leather.

Ibid., fol. 119, col. 1.

    The Midrash repeats the same story, and adds, “His wealth was
    his ruin.”  “He is as rich as Korah” is now a Jewish proverb.

Rav Chiya, the son of Adda, was tutor to the children of Resh Lakish, and once absented himself from his duties for three days.  On his return he was questioned as to the reason of his conduct, and he gave the following reply:  “My father bequeathed to me a vine, trained on high trellis-work as a bower, from which I gathered the first day three hundred bunches, each of which yielded a gerav of wine (a gerav is a measure containing as much as 288 egg-shells would contain).  On the second day I again gathered three hundred bunches of smaller size, two only producing one gerav (one bunch yielding the quantity of wine 144 egg-shells would contain).  The third day I also gathered three hundred bunches, but only three bunches to the gerav, and have yet left more than half of the grapes free for any one to gather them.”  Thereupon Resh Lakish observed to him, “If thou hadst not been so negligent (losing time in the instruction of my children), it would have yielded still more.”

Kethuboth, fol. 111, col. 2.

There were three hundred species of male demons in Sichin, but what the female demon herself was like is known to no one.

Gittin, fol. 68, col. 1.

“Now, when Job’s three friends heard of all this evil that was come upon him, they came each from his own place; Eliphaz the Temanite, Bildah the Shuhite, and Zophar the Naamathite:  for they had made an appointment together to come and mourn with him, and to comfort him” (Job ii. 11).  What is meant when it is said, “They had made an appointment together”?  Rab.  Yehudah says in the name of Rav, “This is to teach that