field is a wonderland.

The frogs are vociferous; and now if they were more silent they
would last longer.

Of all the reptiles known to me, only two utter vocal sounds,--the
alligator and the elephant tortoise. The former roars or bellows,
the latter grunts.




IV

THE MOST INTELLIGENT ANIMALS


To the professional animal-man, year in and year out comes the
eternal question, "Which are the most intelligent animals?"

The question is entirely legitimate. What animals are the best
exponents of animal intelligence?

It seems to me that the numerous factors involved, and the
comparisons that must be made, can best be expressed in figures.
Opinions that are based upon only one or two sets of facts are not
worth much. There are about ten factors to be taken into account
and appraised separately.

In order to express many opinions in a small amount of space, we