[Illustration: THE ENGINES OF THE ARROW] A few years after the Pilgrims sailed for the land of freedom in the tiny Mayflower a man named Branca built a steam-turbine that worked in a crude way on the same principle as Parsons's modern giant.

These individuals are endowed with master-minds, but the task of producing the turbines was probably no greater than the task of others in improving the reciprocating type.