. Cyclopedia of American horticulture : comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening; Horticulture; Horticulture; Horticulture. 1138. Nymphs of four-lined liaf-bue adult of the tdrnished plant-bug. Tlie smallest one is tlie nymph recently hatched. The next is the nvmph after the moult. The imago is shown at the right. Hair lines at the right of nymphs, and small figure near ima
. Cyclopedia of American horticulture : comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening; Horticulture; Horticulture; Horticulture. 1138. Nymphs of four-lined liaf-bue adult of the tdrnished plant-bug. Tlie smallest one is tlie nymph recently hatched. The next is the nvmph after the moult. The imago is shown at the right. Hair lines at the right of nymphs, and small figure near imago indicate the natural size. in many adult Insects. Caterpillars and other larvae pos- sess only simple eyes. .It is thought that each facet of the compound eye sees a part of an object; thus the whole eye would form a mosaic picture on the Insect's brain. The simple eyes doubtless see as our eyes do, and seem to be best adapted for use in dark places and for near vision. Insects do not see the form of objects distinctly, but their eyes are doubtless superior to ours in distin- guishing the smallest movements of an ob- ject. It is now supposed that no Insects can dis- tinctly see objects at a greater distance than 0 feet. It must be a I Its. back to its home. In- sects are doubtless able to distinguish the color of objects, and some Insects seem to prefer certain colors. Blue is said to be the favorite color of tlie honey-bee, and violet that of ants; ants are also apparently sensitive to the ultra- violet rays of light, which man cannot perceive. It is generally supposed that the shape and high colors of flowers attract Insects: but recent ex- periments seem to show that Insects are guided to flowers by the sense of smell rather than by sight. The hard outer skin of an Insect has no nerves distributed in it, hence t IS not sensitive; but it is pierced vith holes, in which grow hairs that ire in connection with nerves at their base. It is by means of these sensory that Insects
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Keywords: ., bookcentury1900, bookdecade1900, booksubjec, booksubjectgardening
