Transactions Society Naval Architects and Marine Engineers, Vol. 24, 1016. Plate 1106. 
Yo illustrate paper on “Electric Pumping Equipment and Notes of Interest on Union Oil 
Company of California's Tank Steamer La Brea,” by Hugo P. Frear, Esq., Member. 
Fic. 8—4” IpEat Rorary Pump witH GEARS EXPOSED. 
