. Mon jardin, son plan et la culture en collaboration avec une description générale de sa géologie, de la botanique, et l'histoire naturelle. Le jardinage. Les crustacés. 449 appelé le Spongilla fluviatilis (fig. 994). Il est composé d'spiculae siliceux, dans lequel l'animal demeure, et lorsqu'il est sec il ressemble beaucoup l'éponge que nous utilisons couramment. Bientôt il meurt lorsqu'elle est retirée de l'eau.. Fig. 994.-éponge à l'eau douce, magaiiied (montrant spicules). Fig. 995.-Frais-crevettes. Les crustacés. Fig. 996.-Cloporte. La partie supérieure de la Wandle ne contient pas les écrevisses {Astacusfluviatilis), que j'ai souvent pris dans la New River, Lea Ri

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. My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. CRUSTACEA. 449 called the Spongilla fluviatilis (fig. 994). It is composed of siliceous spiculae, in which the animal dwells, and when dry it very much resembles the sponge we commonly use. It soon dies when removed from the water.. Fig. 994.—Fresh-water Sponge, magaiiied (showing spicules). Fig. 995.—Fresh-water Shrimp. CRUSTACEA. Fig. 996.—Woodlouse. The Upper Wandle does not contain the Crayfish {Astacusfluviatilis), which I have often caught in the New River, Lea River, and Thames, in the latter of which they abound at and above Oxford. I have placed many in our river, but they have, disappeared, which is another failure in acclimatization. From this creature the Bisque soup of the French is made. One aquatic species of Crustacean is of great value to us, the Fresh-water Shrimp {Gammarus fallax, fig. 995). It exists literally by myriads at the bottom of the river under every stone, and affords abundance of food for the trout, which are very fond of it. Another Crustacean is terrestrial, and does us much mischief It is the Woodlouse {Oniscus asellus, fig. 996), of which there are more than one species. It delights to sally forth by night to devour the delicate parts of the plants in our glass-houses, and it is especially annoying to notice the injury they do to the roots and young shoots of our valuable orchids. The gardener traps them by cutting a potato in half, scooping out a portion, and turning the cavity downwards, when the creatures collect underneath, and can be taken and destroyed, . Perhaps, however, the best remedy for woodlice is the toad, wjiich eagerly devours them, and no good gardener is ever without his pet toads, who thus do him much service. To return to th^ water: there are many microscopic species of Crustaceans, such as the Cyclops, which are suppos.ed to i^fford fqpd fof G G. Please note that these images are e

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