[86a - 40 lines; 86b - 42 lines]
We recommend using the textual changes suggested by the Bach and the marginal notes of the Vilna Shas. This section is devoted to any other important corrections that Acharonim have pointed out in the Gemara, Rashi and Tosfos.
 Gemara 86b [line 22]:
The words "Keivan d'Achlin Shekatzim" כיון דאכלין שקצים
should be "Keivan d'Achlei Shekatzim" כיון דאכלי שקצים (as is found below in the Sugya)
 Gilyon ha'Shas 86b #1:
The words "Pasuk b'Yeshayah Daf 48a" פסוק בישעיה דף 48.
should be "Pasuk b'Yeshayah (48:16)" פסוק בישעיה 48:16
1)[line 1]כטבלא מרובעתK'TAVLA MERU'BA'AS- like a square board
2)[line 1]הא לאו הכי אסורHA LAV HACHI, ASUR- That is, not only the Arugah itself must be square, but the pattern of the seedlings in the Arugah must also be square and not round.
3)[line 4]לפולטת שכבת זרעPOLETES SHICHVAS ZERA
A woman who expels Shichvas Zera within a certain amount of time after having marital relations becomes a Rishon l'Tum'ah, like a Ba'al Keri. The Tana'im argue as to how many Onos (12 hour periods of night or day) this time period constitutes. The Shichvas Zera that is expelled after this time period is not Teme'ah, and does not make the woman Teme'ah. The Rambam rules that Shichvas Zera is not Metamei after three Onos. (RAMBAM Hilchos Avos ha'Tum'ah 5:11)
4)[line 5]"נכונים""NECHONIM"- "prepared" (Shemos 19:15)
5)[line 9]לשון של זהוריתLASHON SHEL ZEHORIS- a strip of crimson wool
6)[line 9]שעיר המשתלחSA'IR HA'MISHTALE'ACH
(a)On Yom ha'Kipurim, a Goral (lottery) is performed by the Kohen Gadol to choose between two identical goats (Vayikra 16:7-10). One (the Sa'ir la'Sh-m) is offered as a Korban Chatas ha'Nisraf and its blood is sprinkled in the Kodesh ha'Kodashim (Vayikra 16:15); the other (the Sa'ir la'Azazel) is dispatched ("Mishtale'ach") to Azazel (a hard rocky cliff), from which it is pushed off to its death (Vayikra 16:21-22). The remains of the Sa'ir ha'Mishtale'ach are Asurim b'Hana'ah.
(b)A strip of crimson wool is tied between the horns of the Sa'ir ha'Mishtale'ach before it is led to Azazel. The Kohen Gadol performs Semichah upon it, confessing the sins of all of the people while doing so. According to Rebbi Yehudah, this confession achieves atonement for all of the people, for all sins except sins of Tum'as Mikdash v'Kodashav. According to Rebbi Shimon, this confession achieves atonement for all of the people except the Kohanim, for all sins except sins of Tum'as Mikdash v'Kodashav. (The second confession over the Par of the Kohen Gadol provides the Kohanim atonement for all other sins besides sins of Tum'as Mikdash v'Kodashav.)
(c)Although the goat itself is Tahor (as long as it is alive), the person who takes the goat to Azazel becomes Tamei and is required to immerse his body and clothing in a Mikvah (Vayikra 16:26).
7)[line 10]"אם יהיו...""IM YIHEYU..."- "If your sins will be as red as scarlet, they shall be as white as snow; though they be as red as crimson, they shall be as white as wool" (Yeshayah 1:18) - HaSh-m promises to cleanse the sins of Bnei Yisrael. On Yom ha'Kipurim, the Day of Atonement, this was demonstrated by means of an open miracle when a red piece of wool turned white at the conclusion of the day's service.
8)[line 11]לסיכהSICHAH- rubbing with oil
9)[line 22]עונותONOS- 12 hour periods of night or day
10)[line 27]בחמישי עביד פרישהB'CHAMISHI AVID PERISHAH- he separated them from their wives on Thursday
11)[line 31]בהשכמהB'HASHKAMAH- early in the morning
12)[line 39]אפלAFEL- dark
13)[line 1]טבולי יוםTEVULEI YOM (TEVUL YOM)
(a)A Tevul Yom is a person who has immersed in a Mikvah to become Tahor for Chulin, but is still waiting for nightfall to be completely Tahor with regard to Terumah, Kodshim and Bi'as Mikdash. The level of Tum'ah of a Tevul Yom is minimal; he is considered only a Sheni l'Tum'ah and if he touches Terumah or Kodesh, the Terumah or Kodesh becomes Pasul and must be burned. Chulin that he touches do not become Teme'im. Liquids that he touches do not become Rishon l'Tum'ah. If he enters the Mikdash, however, he is Chayav Kares (see Background to Nidah 28:18).
(b)After the following nightfall, he becomes completely Tahor with regard to Terumah. If he is a Mechusar Kaparah (see Background to Me'ilah 8:4), he must wait until he brings his sacrifices to become completely Tahor with regard to Kodshim and Bi'as Mikdash.
14)[line 6]ביני שימשיBEINEI SHIMSHEI- Friday night
15)[line 18]סרוחהSERUCHAH- spoiled
16)[line 21]דדאיגי במצותD'DE'IGI B'MITZVOS- that they are apprehensive about Mitzvos
17)[line 21]חביל גופייהוCHAVIL GUFAIHU- their bodies are heated
18)[line 26]דאית לה פרוזדורD'IS LAH PROZDOR- when a child emerges from its mother's womb, it is protected by her thighs which form a passageway for the newborn
19)[line 37]בעצומו של יוםB'ITZUMO SHEL YOM- that very day
20)[line 38]בקביעא דירחאBI'KEVI'A D'YARCHA- when the new month started
21)[line 39]בחד בשבאB'CHAD B'SHABA- on Sunday
22)[line 41]חולשא דאורחאCHULSHA D'URCHA- weariness of the journey