▁tab o os ▁are ▁strict est ▁for ▁the ▁first ▁four ▁days ▁and ▁night s ; ▁ ▁then ▁the ▁students ▁may ▁not ▁leave ▁the ▁can oe ▁house ▁under ▁any ▁circumstances .” ▁ ▁Hans ▁Dam n ▁( based ▁on ▁the ▁ 1 9 0 9 ▁field ▁notes ▁of ▁Ernst ▁Sar fert ' s ▁research ▁on ▁Pol ow at ); ▁ ▁“ In sel n ▁um ▁Tru k : ▁Pol ow at , ▁H ok , ▁und ▁S ata wal .” ▁ ▁IN : ▁ ▁Georg ▁Th ilen ius ▁( Ed .) ▁Ergeb nisse ▁der ▁Süd see - Exp ed ition ▁ 1 9 0 8 - 1 9 1 0 . ▁ ▁Sec . ▁II , ▁B , ▁Vol . ▁ 6 , ▁P t . ▁ 2 , ▁ 1 9 3 5 . ▁ ▁“ First ▁of ▁all , ▁pp wo ▁is ▁the ▁es oter ic ▁art ▁of ▁navigation ▁... ▁Second ly , ▁those ▁who ▁are ▁ade pt ▁at ▁the ▁es oter ic ▁art ▁of ▁navigation ▁are ▁also ▁called ▁pp wo . ▁ ▁Third ly , ▁initi ating ▁others ▁in ▁this ▁es oter ic ▁art ▁of ▁navigation ▁is ▁also ▁known ▁as ▁pp wo ▁... ▁Three ▁of ▁the ▁island ers , ▁P un ak it , ▁Ya ap uk ▁and ▁U ru pi y ▁are ▁to ▁be ▁initi ated ▁this ▁time ▁in ▁the ▁art ▁of ▁the ▁pp wo ▁by ▁Su uta ▁... ▁of ▁Pul uw at ▁and ▁today ▁there ▁is ▁to ▁be ▁a ▁ceremony ▁for ▁this .” ▁ ▁His ak ats u , ▁Hij