TWENTY-FIFTH ANNUAL REPORT 57 
Another project is on foot to raise the level of Yellowstone 
Lake, which will flood the upper reaches of the Yellowstone 
River. Similar attacks are being made on Roosevelt Park in the 
West. These attacks on National Parks are based upon the un- 
fortunate precedent established by the Government in sacrificing 
the Hetch-Hetchy Valley to commercial exploitation for the bene- 
fit of San Francisco. 
The forces of conservation are thoroughly aroused to the 
danger, but funds will be required to meet these continuous 
assaults and the New York Zoological Society should assist in 
every way possible. One of the Managers of our Society, Dr. 
George Bird Grinnell, is actively engaged in this work. 
BRONX PARKWAY COMMISSION. 
Work on the Bronx Parkway has made great headway dur- 
ing the year. The section immediately north of Bronx Park has 
been transformed from a collection of rock piles and tenements 
into what will be one of the most beautiful parks in the city. 
Members of the Society are urged to view the very interest- 
ing operation of the dredges and steam shovels before old con- 
ditions are obliterated beyond recognition. 
RECEPTIONS. 
Annual Dinner.—The Twelfth Annual Dinner to the Board 
of Managers was given through the courtesy of Mr. Madison 
Grant at the Knickerbocker Club, on Monday, December 27, 1920. 
Reception at the Aquarium.—This was held on Monday 
evening, June 7, 1920. At the Zoological Park Ladies’ and Mem- 
bers’ day was observed on May 20, 1920. It was preceded by the 
Spring Meeting of the Board at the Administration Building. 
