נמצא

[If a sheretz is] found

[in] the spot that wood is placed (this refers to an opening in the wall at the bottom of a kirah through which wood could be fed to its fire; this opening was separate from the "eye" previously discussed, and was not ever closed),

Rabbi Yehuda says

[if the sheretz was found] from the outer edge

and inwards (that is the sheretz was at least inside the outer end of this passage through the wall of the kirah, if not in the interior space itself)

it is tamei;

and the Sages say

from the inner edge

and outwards (i.e. the sheretz was in this passage through the wall of the kirah, but not in the inner airspace of the kirah)

it is tahor;

Rabbi Yosi says

from opposite the [opening over which] the pot is placed to cook

and inward (he holds that the sheretz can be completely through the passage and inside the kirah, so long as it is not further inward than this point, which is demarcated by the edges of the openings at the top of the kirah over which the pots are placed)

is tamei,

from opposite the [opening over which] the pot is placed to cook

and outward

is tahor.

[If a sheretz is] found

[in] the bath attendant's station (water in bathhouses were heated over a special stove which had an extension of to their side on which the bath attendant would sit; this extension was hollow and contiguous with the portion of the stove over which the bathwater was heated)

[or] the dyer's station (a similar extension on stoves used to heat dyes)

[or] the olive boiler's station (a similar extension on stoves used to boil olives)

is tahor,

it is not tamei

except from the closing (i.e. the opening at the top of the stove that was closed off when a pot or kettle was placed there to be heated)

and inward (this portion of the mishnah follows only the opinion of Rabbi Yosi).

פרק ח משנה ט

בור (נ"א: כור)ו

A pit (this was lined with hardened clay sufficient to stand on its own and could be used as an oven or stove; alternatively this is a "kor" a smelting furnace used to melt down metals)

that has a spot [to place a pot] for cooking

is tamei (as it is akin to a standard stove or kirah, even though not primarily made for cooking);

and that of glassmakers,

if it has a spot [to place a pot] for cooking,

is tamei.

A furnace of lime-makers (who would heat stone to get lime)

and of glass-makers (this was hotter than the previously mentioned glass-making device)

and of potters

is tahor (because these furnaces were too hot to cook food over).

A large oven (made for baking, this large earthenware vessel was box shaped with an opening on the side akin to that of modern ovens, also in contrast to the scriptural tanur in which items were stuck to its interior walls to be baked, in this the items sat on the ground; this vessel ordinarily was permanently attached to the ground which served as its floor; as such it was not ordinarily susceptible to tumah)

if it has a rim (this was a ledge running around the interior of the walls of this oven and allowed the oven to be moved, and thus it would not be considered attached to the ground)

is tamei;

Rabbi Yehuda says [it will be tamei],

if it has a dome (this was on the top of the oven, was an indication of a type of oven not permanently attached to the ground);

Rabban Gamliel says [it will be tamei]

if it has a stove-top (this refers to a place on its top, like that of a tanur or kirah, on which a pot could be placed to cook; in such a case it would either not be considered as dependant on the ground to function, or not normally be attached permanently to the ground, and is therefore susceptible to tumah).