. An encyclopædia of gardening; . rden during summer, and in the evening ; it increases the progress, and en-larges the parts of all vegetables; gives a fresh appearance to the soil as well as the plants, disperses theirodors in the surrounding atmosphere, and tends to subdue various kinds of insects. 6193. Water, whether as an orna-mental feature, or as an aquarium,should be kept clear both of weedsand insects. Of aquatic weeds themost troublesome in small aquariumsare the confervae and byssi, whichcan only be removed by hand, or byentangling them with a rake orbroom. The larvae of numerous l
. An encyclopædia of gardening; . rden during summer, and in the evening ; it increases the progress, and en-larges the parts of all vegetables; gives a fresh appearance to the soil as well as the plants, disperses theirodors in the surrounding atmosphere, and tends to subdue various kinds of insects. 6193. Water, whether as an orna-mental feature, or as an aquarium,should be kept clear both of weedsand insects. Of aquatic weeds themost troublesome in small aquariumsare the confervae and byssi, whichcan only be removed by hand, or byentangling them with a rake orbroom. The larvae of numerous land-insects are deposited in water or inthe muddy sides of ponds and ditches,as the elephant-hawk-moth {SphinxElpenor, L.) {fig. 582.), the dragon-fly {Libellula, Ij.), and many the aquatic kinds are the wellknown tipulee, of which some species{T. oleracea) (fig. 583.) glide over thewater, and are by many consideredrather ornamental than otherwise,and others live entirely under it, andfeed on the roots of plants. To de-. S G 3 822 PRACTICE OF GARDENING. Part III. stroy, or at least greatly to keep under all aquatic insects, an eflfectual mode is to dry the pond for a dayor two; but in the case of an aquarium it cannot be done; fish and frogs, their natural enemies, musttherefore be encouraged, in order that they may attack them. 6194. Insects and vermin. These must be kept under in every part of the flower-garden and shrubbery,and we perfectly agree with the author of the Florists Manual, that the simple and laborious mode ofpicking away the animal, is the only one to which recourse can be had with permanent advantage. Togive full efficacy to this method of rescuing plants from caterpillars, \ / snails, &c. our attacks must be \ / made upon them at particular sea- ^,sons, which can only be done fromsuch a knowledge of their history,as shall enable us to have swarmsof them destroyed in the destruc-tion of an individual of the spe-cies Without, however, much re- .searc
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Keywords: ., bookcentury1800, bookdecade18, booksubjectgardening, bookyear1826
