Wilkes's Exploring Expedition. 236


CHAPTER XXIII.

The War for the Union--A New Era for the United
States Navy--Opening of the Great Civil War--John
Lorimer Worden--Battle Between the _Monitor_
and _Merrimac_--Death of Worden. 246


CHAPTER XXIV.

Two Worthy Sons--William D. Porter--The Career of
Admiral David Dixon Porter. 259


CHAPTER XXV.

Charles Stewart Boggs--His Coolness in the Presence
of Danger--His Desperate Fight Below New Orleans--His
Subsequent Services. 271


CHAPTER XXVI.

John Ancrum Winslow--His Early Life and
Training--The Famous Battle Between the _Kearsarge_
and _Alabama_. 279