Summary:
The metal barrel does not convey טומאה to the adjacent room (even though חרב הרי היא כחלל [even regarding אהל]), either because it is completely covered by the sticky dried figs, or because the barrel does not extend into the airspace of the adjacent room.
Summary:
Attached plants cannot be an אהל (to bring or protect from טומאה), however they are effective in diminishing the size of an opening. A צמיד פתיל is required to save from טומאת אהל; however it is unnecessary when diminishing the טפח size of an opening.
And a bird that rested in the window - ועוף ששכן בחלון
Summary:
ר"מ disallows using a living animal as a wall which requires ten טפחים, but allows using a living animal to reduce the size of an opening to be חוצץ on the טומאה.
And a Gentile who sat in the window - ועובד כוכבים שישב בחלון
Summary:
A נכרי is not מקבל טומאה מה"ת, and therefore he can be חוצץ בפני הטומאה even though that מדרבנן he is considered a זב. A בן שמונה is neither totally alive nor totally dead. Therefore he is not מקבל טומאה.
It is fit for a tear in a garment - חזי לקריעה דלבושא
Summary:
פחות מגע"ג is not significant to be considered a בגד (so it’s not מקבל טומאה), but people keep them to use for a patch (so it cannot be ממעט).
Since there is suffering for an animal, etc. - כיון דאיכא צער בעלי חיים כולי
Summary:
One would not be מבטל an unfit to eat (non-kosher) animal to the חלון; he will either use it for amusement (if possible) or throw it to the dogs; however he will be מבטל the אבר המדולדל of this animal to the חלון if the animal can entertain him.