 They are found upon almost all parts of plants, the roots, stems, young shoots, buds, and leaves, and there is scarcely a plant which does not harbor one or two kinds peculiar to itself. They are, moreover, exceedingly prolific, for Reaumur has proved...  Report - Page 310by New Hampshire. Department of Agriculture - 1873Full view - About this book
 | Cuthbert William Johnson - Agricultural chemistry - 1844 - 1210 pages
...which does not harbour one or two kinds peculiar to itselt They are exceedingly prolific, and Reaumur has proved that one individual, in five generations, may become the progenitor of nearly MX thousand millions of descendants. It often happens that the succulent extremities and stems... | |
 | Edward Sayers - Floriculture - 1846 - 226 pages
...not harbor one or two kinds peculiar to itself. They are, moreover, exceedingly prolific, for Reaumur has proved that one individual, in five generations, may become the progenitor of nearly six thousand millions of descendants." The word rfphis or plant-lice signifies to exhaust, and... | |
 | Thaddeus William Harris - Beneficial insects - 1852 - 536 pages
...not harbor one or two kinds peculiar to itself. They are, moreover, exceedingly prolific, for Reaumur has proved that one individual, in five generations, may become the progenitor of nearly six thousand millions of descendants. It often happens that the succulent extremities and stems... | |
 | Thaddeus William Harris - Beneficial insects - 1862 - 700 pages
...harbor one or two kinds peculiar to itself. They are, moreover, exceedingly prolific, for Ildaumur has proved that one individual, in five generations, may become the progenitor of nearly six thousand millions of descendants. It ofien happens, that the succulent extremities and stems... | |
 | washington: Government Printing Officee - 1865 - 778 pages
...brood of males and females, the progenitors of a similar line of viviparous mothers for another season. Reaumer has proved that one individual in five generations may become the progenitor of six thousand millions. Small as it is, the Aphis has enemies — the larvae of a little fly, the grubs of the Coccinella,... | |
 | United States. Department of Agriculture - Agriculture - 1865 - 768 pages
...males and females, the progenitors of a similar line of viviparous mothers for another season. Rcaumer has proved that one individual in five generations may become the progenitor of six thousand millions. Sniiill as it is, the Aphis has enemies — the larva? .of a little fly, the grubs of the... | |
 | Cuthbert William Johnson - Agricultural chemistry - 1869 - 1296 pages
...which does not harbour one or two kinds peculiar to itself. They are exceedingly prolific, and Reaumur has proved that one individual, in five generations, may become the progenitor of nearly six thousand millions of descendants. It often happens that the succulent extremities and stems... | |
 | New Hampshire. Department of Agriculture - Agriculture - 1873 - 712 pages
...melody, and their movements are the poetry of motion. Man is to earn his bread by the sweat of his brow, but, unlike .the criminal, solitary and alone,...a pound. England alone consumes 150,000 pounds, or 10,500,000,000 specimens of this insect (coccus cacti). Thus an idea may be formed of their powers... | |
 | Agriculture - 1879 - 698 pages
...and there is scarcely a plant which does not harbor one or two kinds peculiar to itself. Ke'.iumur has proved that one individual, in five generations, may become the progenitor of nearly six thousand millions of descendants. They are u-ually wingless, and tue firat broods are females;... | |
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