 The convention assembled on August 27 at the Odd Fellows Hall in Philadelphia.There were only twenty delegates, the six signers of the call and the fourteen addressees.Nevertheless, they organized themselves as the Supreme Conclave of the new Improved Order of Heptasophs, with Judge Metzel as the first Archon 

The organization grew slowly, with the 83 members of the Zeta Conclave as the core of the membership.