. Transactions of the American Philosophical Society. J-E Humphrey,iel. BAlEi3el.!«ii\ ^ANA, MECTASPERliJL, POLYA:^JDRA. TransaclJons Amer. Phjios. Soc Part PJate Eifumphreydel B 3NSATA, EACEMOSJ Traasactions Amor Philos. Part 111 Plate XX. Ji^^--:

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