GENETICS: C. B, DAVENPORT 
407 
generation — ^it is indicated by energetic activity, push and marked emo- 
tional output; (4) absence of fear, such as permitted Perkins at 6 years to 
drive, tied in a sleigh, 10 miles and back to town to meet an emergency; 
or Maffitt at 10 years to travel alone with a ticket on his coat from 
North Carolina to White Plains, N. Y., in the days of stage coaches; or 
Winslow, at 10 years, to set to sea in a skiff, with a young cedar tree 
for a sail, from which he was rescued by an incoming vessel. Impor- 
tant also is (5) ability to command men. 
WhrO 
M. 
-o o 
FIG. 3 
Pedigree chart of the Preble family. Commodore Edward Preble, U. S, N., is at Gen- 
eration III, No. 1. 
An analysis of these 14 cases of naval fighters shows that all of those 
about whose youth data could be obtained (11) were adventurous, no- 
madic, fearless or ^'quarrelsome." Such then are the juvenile reactions 
of future successful naval fighters. In temperament 10 were hyper- 
kinetics, 2 hypokinetic, 1 mixed and 1 calm. The hyperkinetic is the 
commonest reaction of successful naval fighters; but some of the great- 
