"A spendthrift in invention;" versatility and daring.
The screw-propeller
vs
. the paddle-wheel for marine propulsion.
Designs and constructs the steam-frigate "Princeton" and the hot-air ship "Ericsson".
The Civil War and his services in the art of naval construction.
His new model of a floating battery and warship, "The Monitor".
The battle between it and the "Merrimac" a turning-point in naval aspect of the war.
"The Destroyer," built in connection with Mr. Delamater.
Improves the character and reduces friction in the use of heavy ordnance.