"But what plants live under water?" said Daisy.
"Sea weeds."
"Oh! So many of them?"
"So many, that the rocks are sometimes darkened by their
fossil remains, and in some places those remains form beds of
coal several feet thick."
"And are there a great many remains of the trilobites?"
"There are whole rocks, Daisy, that are formed almost entirely
of trilobites."
"Sea-weeds and trilobites — what a strange time!" said Daisy.
"Was that all that was living?"
"No; there were other sea creatures of the lower kind, and at
last fishes. But when the fishes became very numerous, the
trilobites died out and passed away."
That old time had a wonderful charm for Daisy; it was, as she
thought, better than a fairy tale. The doctor at last let her
into the secret that he had a trilobite too; and the next time
he came he brought it with him. He was good enough to leave it
with Daisy a whole day; and Daisy's meditations over it and
her own together were numberless and profound.
The next transition was somewhat sudden; — to a wasp or two
that had come foraging on Daisy's window-sill. But Dr.
Sandford was at home there; and so explained the wasp's work
and manner of life, with his structure and fitness for what he
had to do, that Daisy was in utter delight; though her eyes
sometimes opened upon Dr.
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