. My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. Fig. 1044.—Pentatoma oleaceum. Fig. 1043.—Lygus solani and Lygus umbellatarum. Aphis ; and others feed underground, and suck the roots of plants, as one species which infest the lettuce. When aphides attack a plant, it has a tendency to rot at the roots, and I have even known large willow-trees to die down and rot after a severe attack by aphides. Gardeners are generally too tardy in the destruction of these creatures ; the instant they appear they should be killed with
. My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. Fig. 1044.—Pentatoma oleaceum. Fig. 1043.—Lygus solani and Lygus umbellatarum. Aphis ; and others feed underground, and suck the roots of plants, as one species which infest the lettuce. When aphides attack a plant, it has a tendency to rot at the roots, and I have even known large willow-trees to die down and rot after a severe attack by aphides. Gardeners are generally too tardy in the destruction of these creatures ; the instant they appear they should be killed with tobacco smoke. Melon and cucumber plants frequently perish from the attacks of these creatures, as they remain unnoticed on the under surface of the leaves. The aphis exists in three states,—the larva, the pupa, and the winged or perfect insect. It multiplies with extreme rapidity, and in the winged state frequently appears in vast clouds, filling the air and settling upon every object. Eggs are laid at the end of the year by some , and I have hatched eggs experimentally in warm houses, to be sure that they were the eggs of aphides. It is a remarkable fact that the females propagate to an unknowii extent without impregna- tion ; and although I have kept myriads of the Aphis vastator for observation, I have never seen either an &gg or a male. We are in the habit of looking to astronomy for numbers beyond the capacity of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smee, Alfred, 1818-1877. London, Bell and Daldy
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectgardening, bookyear18
