212 SECRETS OF ANIMAL LIFE 
the mark, and for lack of a little logic the creature 
is often fatally nonplussed. But in the big-brained 
type, with its rapid educability and capacity for 
profiting by experience, there is likewise liability to 
failure, and very notably in mankind, for lack of 
more instinctive wisdom. On the whole, however, 
intelligence is the more excellent way, especially 
when external registration in a social heritage is 
added thereto. 
