zoo
_
THE
OF FISHES
of a species. W’hen the weaklings drop out of one struggle
and sink to the bottom or oat helplessly on the surface, ‘
according to the evidence now available they have not been
blotted out of existence. They have developed other
characters and formed new species and groups of shes.
'
.
The doctrine of utility—that characters have survived
owing to their advantageousness—lends itself too readin
-
to misuse to be of much scientic value. It is better to
=
remember Goethe’s dictum, quoted by Charles Darwin:
‘Ï The future question for naturalists will be how, for
instance, cattle got their horus and not for what they are
used.”
‘
.
.