The Natural History Review: A Quarterly Journal of Biological Science, 1권

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Hodges & Smith, 1854
 

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65 페이지 - ... of the pancakes makes a coat for the opium. Of this he takes about one-third of the mass before him, puts it inside the petals, and agglutinates many other coats over it : the balls are then again weighed, and reduced or increased to a certain weight if necessary. At the day's end, each man takes his work to a rack with numbered compartments, and deposits it in that which answers to his own number, thence the balls (each being put in a clay cup) are carried to an enormous drying-room, where they...
105 페이지 - To trace in nature's most minute design The signature and stamp of power divine, Contrivance intricate, express'd with ease, Where unassisted sight no beauty sees, The shapely limb and lubricated joint, Within the small dimensions of a point, Muscle and nerve miraculously spun, His mighty work, who speaks and it is done, The invisible in things scarce seen reveal'd, To whom an atom is an ample field...
220 페이지 - ... their progenitors, and form a new and greatly increased colony. This second generation pursues the same course as the first, the individuals of which it is composed being, like those of the first, sexless, or at least without any trace of the male sex throughout. These same conditions are then repeated, and so on almost indefinitely, experiments having shown that...
207 페이지 - Men that undertake only one district are much more likely to advance natural knowledge than those that grasp at more than they can possibly be acquainted with : every kingdom, every province, should have its own monographer.
221 페이지 - Aphides cannot be said to constitute as many true generations, any more than the different branches of a tree can be said to constitute as many trees ; on the other hand, the whole suite, from the first to the last, constitute but a single true generation.
54 페이지 - Blue Eyebright ! * loveliest flower of all that grow In flower-loved England ! Flower, whose hedge-side gaze Is like an infant's ! What heart doth not know Thee, cluster'd smiler of the bank ! where plays The sunbeam with the emerald snake, and strays * The Germander Speedwell. The dazzling rill, companion of the road...
47 페이지 - A GLACIER is AN IMPERFECT FLUID, OR A VISCOUS BODY. WHICH IS URGED DOWN SLOPES OF A CERTAIN INCLINATION BY THE MUTUAL PRESSURE OF ITS PARTS.
108 페이지 - The tree being felled, is cut into lengths of five or six feet. A part of the hard wood is then sliced off, and the workman, coming to the pith, cuts across the longitudinal fibres and the pith together, leaving a part at each end uncut, so that when it is excavated, there remains a trough, into which the pulp is again put, mixed with water, and beaten with a piece of wood. Then the fibres, separated from the pulp, float at top, and the flour subsides. After being cleared in this manner by several...
221 페이지 - ... as already mentioned. Moreover, these rows of germs, which, at one period, closely resemble in general form the ovaries of some true insects, are not continuous with any uterine or other female organ, and therefore do not at all communicate directly with the external world. On the other hand, they are simply attached to the inner surface of the animal, and their component germs are detached into the abdominal cavity as fast as they are developed, and then escape outwards through a porus genitalis...
123 페이지 - It is to Dr. Alfred R, Wallace that we are most indebted for his glowing descriptions of the Brazilian forests, particularly those of the River Amazon and the Rio Negro, through which he travelled in 1848. In his accounts of the forests of the Amazons he says : " Perhaps no country in the world contains such an amount of vegetable matter on its surface as the valley of the Amazon. Its entire extent, with the exception of some very small portions, is covered with one dense and lofty primeval forest,...

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