nces of protective prickliness might be tected by true thorns, which are really massed vege- whole body with air, or with water, if it cannot reach cited. The above examples, however, are sufficient to table fibers or hairs, and are therefore analogous to the surface quickly. In the sea,… … ary circuits of al- fish furnished 1. Globe Fish Inflated for Protection. 2. Normal Form of Globe Fish. 3. Typical Spiny Shell, 4. Typical Cactus. ternating -currenI with prickly 6. Teasel Heads. 6. Sea Urchin. transformers and shells, seem to ob- their respective ject to being lines. It must be…
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![An illustration from Zoology of New York; or, The New York fauna [Series: Natural history of New York] (1842)](https://img.insideoutlibrary.com/img/200/nypl-nypl_adb54360c60d-256-1.webp)
