Taking these dimensions into consideration, it will be easy to conceive, when the following list of specimens which Mr. Gosse introduced into his Aquarium is examined, that his population was too dense for the extent of his province, although the space might not have appeared too much filled for picturesque effect. Of vegetable specimens, he introduced at once the following:—
1. A tuft of Furcellaria fastigiata.
2. Two of Rhodymenia palmata.
3. One of Dictyota dichotoma.
4. A small Fucus serratus.
5. One Laminaria digitata.
6. Two tufts of Padina pavonia.
7. Several masses of Corallina officinalis.
8. Griffithsia setacea.
9. Delesseria alata.