..
Forthwith the sounds and seas, each creek and bay,
With fry innumerable swarm, and shoals
Of fish, that with their fins and shining scales
Glide under the green wave in sculls that oft
Bank the mid sea: part single or with mate
Graze the sea-weed, their pasture, and through groves
Of coral stray, or sporting with quick glance
Show to the sun their waved coats dropt with gold,
Or in their pearly shells at ease attend
Moist nutriment, or under rocks their food
In jointed armor watch."
But no means were at hand to pursue these unknown creatures to their
unknown residences, and to observe their manners when at home. Single,
withered, and often mutilated specimens of minute fish, mollusks, or
radiata, in the museum, alone illustrated the mysteries of the deep sea.
Fish, to be sure, could be kept for longer or shorter periods in globes
of glass filled with water; but the more delicate creatures inevitably
perished soon after their removal from their mysterious abodes. Such
a passionate desire to "search Nature and know her secrets" finally
originated the idea of the Aquarium.
The term _vivarium_ was used among the ancients to signify many
things,--from the dens of the wild animals which opened under the
Colosseum, to an oyster-bed; and so now it may mean any collection of
living creatures.
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