He reminds one of the Roman mother in a popular burlesque, who suspects
her son of smoking, and vehemently declares that she smells tobacco,
but, after a moment, recollects the historical proprieties, and mutters
to herself, apologetically, 'No, not tobacco; that's not yet invented.'
A would-be silurian or triassic toad ought, in like manner, to remember
that in the ages to whose honours he aspires his own amphibian kind was
not yet developed. He ought rather to come out in the character of a
ceratodus or a labyrinthodon.
Again, another adult toad crawls into the hollow of a tree, and there
hibernates. The bark partially closes over the slit by which he entered,
but leaves a little crack by which air can enter freely. The grubs in
the bark and other insects supply him from time to time with a frugal
repast. There is no good reason why, under such circumstances, a placid
and contented toad might not manage to prolong his existence for several
consecutive seasons.
Once more, the spawn of toads is very small, as regards the size of the
individual eggs, compared with the size of the full-grown animal.
Nothing would be easier than for a piece of spawn or a tiny tadpole to
be washed into some hole in a mine or cave, where there was sufficient
water for its developement, and where the trickling drops brought down
minute objects of food, enough to keep up its simple existence. A toad
brought up under such peculiar circumstances might pass almost its
entire life in a state of torpidity, and yet might grow and thrive in
its own sleepy vegetative fashion.
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