Nazir

Can we say [that the controversy about the air of a foreign country] is the same as that between the following Tannaim? [It has been taught:] If a person enters a foreign country in a box, or a chest, or a portable turret, Rabbi declares him unclean, while R. Jose son of R. Judah declares him clean. Is not this because Rabbi holds that [the uncleanness of the lands of the Gentiles]  is because of the air  and R. Jose son of R. Judah holds that it is because of the soil?  — No. Both would agree that [foreign countries defile] because of the soil. The latter, however, holds that a tent in motion is still counted a tent,  whilst the former holds that a tent in motion does not constitute a tent.  But have we not been taught: R. Jose son of R. Judah says that if a chest is full of utensils and someone throws it in front of a corpse in a tent, it becomes unclean,  whilst if it were there already [in the tent], it remains clean?  — It must therefore be that both [Rabbi and R. Jose son of R. Judah agree that foreign countries defile] because of the air. The latter holds that since [travelling in a chest] is not common the Rabbis did not intend the enactment to apply [to such a case].  whilst the former holds that although it is unusual, the Rabbis intended the enactment to apply to it. It has been taught to the same effect:  A person who enters a foreign country in a box, or a chest, or a portable turret remains clean, whilst [if he enters] in a carriage. or a boat, or a ship with a mast,  he becomes unclean. Alternatively,  [Rabbi and R. Jose son of R. Judah] may dis agree here on the question [whether a man travelling in a chest was declared unclean] for fear lest he put out his bead or the greater part of his [body].  It has been taught to this effect. R. Jose son of R. Judah says, a person who enters a foreign country in a box, or a chest, or a portable turret is clean until he puts out his head or the greater part of his [body]. BUT HE COMMENCES TO RESUME COUNTING [IMMEDIATELY etc.]: R. Hisda said: It was taught [that the days of declared leprosy are not counted] only in the case of a short naziriteship,  but in the case of a long naziriteship  they also help to discharge [the days of his naziriteship]. R. Sherabya objected: HE COMMENCES TO RESUME COUNTING IMMEDIATELY AND DOES NOT ANNUL THE PREVIOUS PERIOD.  What are the circumstances? For if it is speaking of a short naziriteship, he requires [thirty days] growth of hair,