Pictures of the "B B" 



Photos by Gilbert H. Grosvenor 



An experimental boat of Dr Alexander Graham Bell, driven by aerial propellers. The 

 boat carries a 20-horse-power motor, weighing about 115 pounds. The motor was built by 

 G. H. Curtiss, of Hammondsport, N. Y. The boat, which has attained a speed of nearly 10 

 miles an hour in smooth water, is used by Dr Bell to test the efficiency of aerial propellers of 

 different designs. In the pictures it is being guided by Mr Curtiss. 



