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HYDROIDS.
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HYDROIDS. |
By Mrs. S. B. HERRICK.
SOME of the most exquisite forms of organic Nature are to be found in that shadowy border-land which unites rather than divides the animal and vegetable worlds. It is hard to believe, even when looking with careful scrutiny at certain forms of animal life, at
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/5c/PSM_V08_D027_Plumularia_falcata.jpg/250px-PSM_V08_D027_Plumularia_falcata.jpg)
Fig. 1.—Plumularia falcata. (Natural Size.)
the corals, for instance, the sponges, and the hydroids, that an existence which so closely resembles vegetation should be essentially ani-