Zoophytes.
Writing on the lower phases of Marine Animal life, he says:—“Indeed, for my own part, I am strongly of opinion that there is sense existing in those bodies which have the nature of neither animals nor vegetables, but a third, which partakes of them both:—sea-nettles, and sponges, I mean. The Sea Nettle wanders to and fro by night, and at night changes its locality. These creatures are by nature a sort of fleshy branch, and are nurtured upon flesh. They have the power of producing an itching, smarting pain, just like that caused by the nettle found on land. For the purpose of seeking its prey, it contracts, and stiffens itself to the utmost possible extent, and then, as a small fish swims past, it will suddenly spread out its branches, and so seize and devour it. At another time it will assume the appearance of being quite withered away, and let itself be tossed to and fro, by the waves, like a piece of sea-weed, until it happens to touch a fish. The moment it does so, the fish goes to rub itself against a rock, to get rid of the itching: immediately upon which, the nettle pounces upon it. By night also it is on the look-out
for Scallops and Sea-urchins. When it perceives a hand approaching it, it instantly changes its colour, and contracts itself; when touched, it produces a burning sensation, and if ever so short a time is afforded, makes its escape. Its mouth is situate, it is said, at the root or lower part, and the excrements are discharged by a small canal situated above.