The Microscope and Its RevelationsJohn Churchill and Sons, 1868 - Всего страниц: 794 |
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Другие издания - Просмотреть все
The Microscope and Its Revelations, Vol. 1 (Classic Reprint) William Benjamin Carpenter Недоступно для просмотра - 2017 |
The Microscope: And Its Revelations (Classic Reprint) William B. Carpenter Недоступно для просмотра - 2015 |
The Microscope and Its Revelations, Vol. 1 (Classic Reprint) William Benjamin Carpenter Недоступно для просмотра - 2017 |
Часто встречающиеся слова и выражения
Achromatic acid adjustment advantage angular aperture animal Animalcules Antheridia apparatus appearance areola arrangement attached axis Binocular body Calcareous Canada balsam canal cavity cells centre chambers cilia colour Condenser consists convenient convex convex lens Cuticle diameter disk distance distinct employed endochrome examination extremely Eye-piece fibres filaments fluid focus Foraminifera frond frustules furnished genus glass gonidia illumination inch Infusoria Insects instrument Journ Larvæ layer lens lenses light magnifying power membrane ment Microsc Microscope Microscopist milled-head minute Mirror mode mounted movement Nachet's Object-glass oblique observer Opaque objects ordinary organs pair particles pass peculiar Plants plate portion present prism Prof rays refraction resembling Rotifera scale seen segments separated shell shown side slide sometimes species specimens spicules stage stem Stereoscopic Stomata structure substance surface thickness thin tion tissue transparent transverse tube usually utricle valves Vegetable vertical Volvox whilst Zoophytes Zoospores
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Стр. 290 - is not avoided but pushed aside ; or, if it be sufficient to avert the onward course of the frustule, the latter is detained for a time equal to that which it would have occupied in its forward projection, and then retires from the impediment as if it had accomplished its full course.
Стр. 294 - Point, the bottoms of which are literally covered in the first warm days of spring with a ferruginous-coloured mucous matter, about a quarter of an inch thick, which, on examination by the microscope, proves to be filled with millions and millions of these exquisitely beautiful siliceous bodies. Every submerged stone, twig, and spear of grass, is enveloped by them ; and the waving plume-like appearance of a filamentous body covered in this manner, is often extremely elegant.
Стр. 671 - in which the honey is obtained when the organ is plunged into it at the bottom of a flower, is by
Стр. 768 - The result of this gentleman's researches * proves that granites have solidified at a heat far below the fusing points of their constituent minerals, and at such a pressure as to enable it to entangle and retain a small amount (£ to •£ per cent.) of aqueous vapour, which naturally must have been present during its liquefaction.
Стр. 46 - It is certainly a matter of surprise that opticians, especially on the Continent, should have so long neglected the very simple means which are at present commonly employed in this country of giving an inclined position to microscopes, since it is now universally acknowledged that the vertical position is, of all that can be adopted, the very worst.
Стр. 356 - Fungus spreads by the extension of its own minute stems and branches ; and also by the production of minute germs, which are taken up by the circulating blood, and carried to distant parts of the body. The disease invariably occasions the death of the Silk-worm ; but it seldom shows itself externally until afterwards, when it rapidly shoots forth from beneath the skin.
Стр. 141 - ... of the numerical, instead of opposing and counteracting this tendency, add to it increased strength, in consequence of the violent party struggles incident to them, as has been fully explained. And hence their encroachments on liberty and the danger to which it is exposed under such governments. So great, indeed, is the difference between the two in this ^respect that liberty is little more than a name under all governments of the absolute form, including that of the numerical "majority, and...
Стр. 531 - ... gradually tapering towards either end to a fine point ; the whole bundle coiled like a strand of rope into a lengthened spiral, the threads of the middle and lower portions remaining compactly coiled by a permanent twist of the individual threads ; the upper portions of the coil frayed out, so that the glassy threads stand separate from one another, like the bristles of a glittering brush ; the lower extremity of the coil imbedded perpendicularly in the middle of a hemispherical or conical undoubted...
Стр. 600 - The greater the dip of these laminae, the closer will their edges be ; whilst the less the angle which they make with the surface, the wider will be the interval between the lines. When the section passes for any distance in the plane of a lamina, no lines will present themselves on that space. And thus the appearance of a section of nacre is such, as to have been aptly compared by Sir J. Herschel to the surface of a smoothed deal board, in which the woody layers are cut perpendicularly to their...
Стр. 720 - Passing outwards, we find the cells more completely formed ; at first nearly spherical in shape ; but becoming polygonal where they are flattened one against another.