ELEVENTH ANNUAL REPORT. 29 
special acknowledgment is here made to Commissioner Joseph I. 
Berry, to Mr. Martin Schenck, Chief Engineer; Mr. William P. 
Hennessy, Assistant Engineer, and Mr. G. K. Ackerman, Chief 
Clerk, who have continued to be helpful and friendly, and this 
Society desires to record its appreciation of their co-operation. 
Respectfully submitted, 
CHARLES T. BARNEY, Chairman. 
HENRY FAIRFIELD OSBORN, Percy R. Pyne, 
MADISON GRANT, WILLIAM WHITE NILES, 
Joun S. Barnes, SAMUEL THORNE, 
Levi P. Morton, ex-officio. 
January I, 1907. 
