The Complete Works of Edgar Allan Poe. Эдгар Аллан По

Чтение книги онлайн.

СКАЧАТЬ target="_blank" rel="nofollow" href="#ulink_e0718667-c47b-5279-90fa-cf5e78000bac">12. Schouw advocates a class of plants that grow upon living animals — the Plantae Epizoae. Of this class are the Fuci and Algae.

13. In mines and natural caves we find a species of cryptogamous fungus that emits an intense phosphorescence.

14. The orchis, scabius and valisneria.

15. The corolla of this flower (Aristolochia Clematitis), which is tubular, but terminating upwards in a ligulate limb, is inflated into a globular figure at the base. The tubular part is internally beset with stiff hairs, pointing downwards. The globular part contains the pistil, which consists merely of a germen and stigma, together with the surrounding stamens. But the stamens, being shorter than the germen, cannot discharge the pollen so as to throw it upon the stigma, as the flower stands always upright till after impregnation. And hence, without some additional and peculiar aid, the pollen must necessarily fan down to the bottom of the flower. Now, the aid that nature has furnished in this case, is that of the Tiputa Pennicornis, a small insect, which entering the tube of the corrolla in quest of honey, descends to the bottom, and rummages about till it becomes quite covered with pollen; but not being able to force its way out again, owing to the downward position of the hairs, which converge to a point like the wires of a mouse-trap, and being somewhat impatient of its confinement it brushes backwards and forwards, trying every corner, till, after repeatedly traversing the stigma, it covers it with pollen sufficient for its impregnation, in consequence of which the flower soon begins to droop, and the hairs to shrink to the sides of the tube, effecting an easy passage for the escape of the insect.” Rev. P. Keith-System of Physiological Botany.

16. The bees — ever since bees were — have been constructing their cells with just such sides, in just such number, and at just such inclinations, as it has been demonstrated (in a problem involving the profoundest mathematical principles) are the very sides, in the very number, and at the very angles, which will afford the creatures the most room that is compatible with the greatest stability of structure.

17. He observed a flock of pigeons passing betwixt Frankfort and the Indian territory, one mile at least in breadth; it took up four hours in passing, which, at the rate of one mile per minute, gives a length of 240 miles; and, supposing three pigeons to each square yard, gives 2,230,272,000 Pigeons. —“Travels in Canada and the United States,” by Lieut. F. Hall.

18. The earth is upheld by a cow of a blue color, having horns four hundred in number."— Sale’s Koran.

19. “The Entozoa, or intestinal worms, have repeatedly been observed in the muscles, and in the cerebral substance of men."— See Wyatt’s Physiology, p. 143.

20. On the Great Western Railway, between London and Exeter, a speed of 71 miles per hour has been attained. A train weighing 90 tons was whirled from Paddington to Didcot (53 miles) in 51 minutes.

21. The Eccalobeion

22. Maelzel’s Automaton Chess-player.

23. Babbage’s Calculating Machine.

24. Chabert, and since him, a hundred others.

25. The Electrotype.

26. Wollaston made of platinum for the field of views in a telescope a wire one eighteen-thousandth part of an inch in thickness. It could be seen only by means of the microscope.

27. Newton demonstrated that the retina beneath the influence of the violet ray of the spectrum, vibrated 900,000,000 of times in a second.

28. Voltaic pile.

29. The Electro Telegraph Printing Apparatus.

30. The Electro telegraph transmits intelligence instantaneously — at least at so far as regards any distance upon the earth.

31. Common experiments in Natural Philosophy. If two red rays from two luminous points be admitted into a dark chamber so as to fall on a white surface, and differ in their length by 0.0000258 of an inch, their intensity is doubled. So also if the difference in length be any whole-number multiple of that fraction. A multiple by 2 1/4, 3 1/4, &c., gives an intensity equal to one ray only; but a multiple by 2 1/2, 3 1/2, &c., gives the result of total darkness. In violet rays similar effects arise when the difference in length is 0.000157 of an inch; and with all other rays the results are the same — the difference varying with a uniform increase from the violet to the red.

32. Place a platina crucible over a spirit lamp, and keep it a red heat; pour in some sulphuric acid, which, though the most volatile of bodies at a common temperature, will be found to become completely fixed in a hot crucible, and not a drop evaporates — being surrounded by an atmosphere of its own, it does not, in fact, touch the sides. A few drops of water are now introduced, when the acid, immediately coming in contact with the heated sides of the crucible, flies off in sulphurous acid vapor, and so rapid is its progress, that the caloric of the water passes off with it, which falls a lump of ice to the bottom; by taking advantage of the moment before it is allowed to remelt, it may be turned out a lump of ice from a red-hot vessel.

33. The Daguerreotype.

34. Although light travels 167,000 miles in a second, the distance of 61 Cygni (the only star whose distance is ascertained) is so inconceivably great, that its rays would require more than ten years to reach the earth. For stars beyond this, 20 — or even 1000 years — would be a moderate estimate. Thus, if they had been annihilated 20, or 1000 years ago, we might still see them to-day by the light which started from their surfaces 20 or 1000 years in the past time. That many which we see daily are really extinct, is not impossible — not even improbable.

      Some Words with a Mummy

       Table of Contents

      The symposium of the preceding evening had been a little too much for my nerves. I had a wretched headache, and was desperately drowsy. Instead of going out therefore to spend the evening as I had proposed, it occurred to me that I could not do a wiser thing than just eat a mouthful of supper and go immediately to bed.

      A light supper of course. СКАЧАТЬ