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^"hiri The g"7 7--.Tii :ire very distinct. A;:-;<"it tise tars'i_ ._ — 

 -ve^n the metal tig 's-hich ^as tise-d for the ideitti£ca":';'n of '^u-. 

 Phot'^graphe-i \jY Dr. Henry <'i. Pisii>d. 



