The American Naturalist, Volume 1

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Essex Institute, 1868 - Biology

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Page 306 - To-day I saw the dragon-fly Come from the wells where he did lie. " An inner impulse rent the veil Of his old husk : from head to tail Came out clear plates of sapphire mail. " He dried his wings: like gauze they grew: Thro' crofts and pastures wet with dew A living flash of light he flew.
Page 362 - ... immediately," according to Mr. FW Putnam,* "collects a small amount of pollen mixed with honey, and in this deposits from seven to fourteen eggs, gradually adding to the pollen mass until the first brood is hatched. She does not wait, however, for one brood to be hatched before laying the eggs of another, but, as soon as food enough has been collected, she lays the eggs for a second. The eggs...
Page 52 - Take out a leaf and put it into a vessel of water ; rub it between the fingers under the water. If the epidermis and parenchyma separate easily, the rest of the leaves may be removed from the solution, and treated in the same way ; but if not, then the boiling must be continued for some time longer. To bleach the skeletons, mix about a drachm of chloride of lime with a pint of water, adding sufficient acetic acid to liberate the chlorine. Steep the leaves in this till they are whitened (about 10...
Page 306 - An inner impulse rent the veil ^ Of his old husk : from head to tail Came out clear plates of sapphire mail. " He dried his wings : like gauze they grew : Through crofts and pastures wet with dew A living flash of light he flew.
Page 83 - What a destruction of leaves this single species of insect could make if only a one hundredth part of the eggs laid came to maturity ! A few years would be sufficient for the propagation of a number large enough to devour all the leaves of our forests.
Page 384 - ... instead of purplish red. With the blue glasses, which allowed some green and yellow to pass, that which was red or yellow in the leaf had spread, so that there only remained a green border or edge. Under the nearly pure violet glasses the foliage became almost uniformly green.
Page 458 - ... proven, — and for it sincerely thank Mr. Darwin, — that which is hypothesis, or based only upon probabilities, we reject, as belonging in the category of mere theories, to disprove or purify which the modern scientific reform was inaugurated. Much, too, may be said against the sufficiency of " natural selection in the struggle of life," from' observations made upon the phenomena of the economy of nature.
Page 421 - The cloth linings of carriages can be secured for ever from the attacks of moths by being washed or sponged on both sides with a solution of the corrosive sublimate of mercury in alcohol, made just strong enough not to leave a white stain on a black feather.
Page 2 - ... the various departments of Natural History invites the establishment of a journal which shall popularize the best results of scientific study, and thus serve as a medium between the teacher and the student, or, more properly, between the older and the younger student of nature The value of the magazine will depend more on its power to awaken the absorbing interest invariably excited by the contemplation of nature, and of illustrating the wisdom and goodness of the Creator, than on any adornment...
Page 449 - weightier matters of the law," it is also true that in no other way could the material laws of the universe be thoroughly investigated than by making them the subjects of an absorbed and undivided attention. It would be as just to impugn the motives and decry the merits of the maker of our almanacs, because his mathematical calculations were not interlarded with moral maxims, as to reproach the student of natural phenomena because he did his work so well, and left to others the co-ordination of the...

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