To establish the exact relationship it is necessary not only to breed but to rear the medusa, which cannot always be done in 1 In some cases hydroids have been reared in aquaria from ova of medusae, but these hydroids have not yet been found in the sea (Browne [Io a]). [Please select]
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I have observed similar activity when gar fed in aquaria. [Please select]
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_ Water bugs and beetles of several species in small aquaria covered with a wire net. [Please select]
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If kept cool, hydras may live several days in such aquaria. [Please select]
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Notice the location of the hydras in the large, undisturbed aquaria. [Please select]
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Search for pond snail's eggs on the side of the aquaria. [Please select]
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_ Living frogs in small cages or aquaria; living toads; some pungent liquid, as ammonia. [Please select]
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There is not much vegetation as yet in the tanks, which may puzzle some people who have been accustomed to balance the animal and vegetable life in their aquaria by introducing full-grown sea-weeds. [Please select]
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How much remains to be done may be gathered from the fact that we can as yet keep no deep-sea Merrows in aquaria, only shore-dwellers will live with us, and not all of these. [Please select]
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