Memoirs of the Literary and Philosophical Society of ManchesterW. Eyres, 1862 |
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Acad appear arsenic arsenious acid atmosphere average blue centre circular factors colour cyclical permutations Deel degree of humidity density derangement of G derived derangements derived groups diameter didymous radicals disc disease curve Donor effect elements equivalent groups experiment function Gesellschaft give gold green group G grouped group heptacron Inches Inches Inches least common multiple Leeuwarden London malaria Manchester mean temperature Memoir ments model group modular groups moraines motion n-acron n+1)-acrons Nth order observations obtained oscillations Owens College P₁ partition penumbra permutations phenomena Phil pi+c plate Pour le Mérite powers principal substitutions prism produced quartz rain rays reefs reflected refraction remarkable rise roots of unity shadow Société Society spots Styria surface system of exponents theorem tion unity vertical rows vibrations waves week ending yellow
Popular passages
Page 26 - Why do those cliffs of shadowy tint appear More sweet than all the landscape smiling near ?— 'Tis distance lends enchantment to the view, And robes the mountain in its azure hue.
Page 49 - tis a Sense of that Motion under the Form of Sound ; so Colours in the Object are nothing but a Disposition to reflect this or that sort of Rays more copiously than the Rest; in the Rays they are nothing but their Dispositions to propagate this or that Motion into the Sensorium, and in the Sensorium they are Sensations of those Motions under the Forms of Colours.
Page 49 - And if at any time I speak of Light and Rays as coloured or endued with Colours, I would be understood to speak not philosophically and properly, but grossly, and accordingly to such Conceptions as vulgar People in seeing all these experiments would be apt to frame. For the Rays to speak properly are not coloured. In them there is nothing else than a certain Power and Disposition to stir up a Sensation of this or that Colour.
Page 29 - As we ascend in the atmosphere, the deepness of the blue tinge gradually dies away ; and to the aeronaut who has soared above the denser strata, or to the traveller who has ascended the Alps or the Andes, the sky appears of a deep black, while the blue rays find a ready passage through the attenuated strata of the atmosphere.
Page 214 - ... the higher parts. There is hardly a district in Upper Styria where you will not find arsenic in at least one house, under the name of hydrach. They use it for the complaints of domestic animals, to kill vermin, and as a stomachic to excite an appetite. I saw one peasant show another on the point of a knife how much arsenic he took daily, without which, he said, he could not live ; the quantity I should estimate at two grains.
Page 53 - And are not these vibrations propagated from the point of incidence to great distances? And do they not overtake the rays of light, and by overtaking them successively do they not put them into the fits of easy reflection and easy transmission described above?
Page 210 - Eoscoe stated that all the letters received from the medical men in Styria agree in acknowledging the general prevalence of a belief that certain persons are in the habit of continually taking arsenic in quantities usually supposed sufficient to produce death. Many of the reporting medical men had no experience of the practice ; others describe certain cases of...
Page 80 - Seeing, therefore, the improvement of telescopes of given lengths by refractions is desperate, I contrived heretofore a perspective by reflection, using instead of an object glass a concave metal.
Page 233 - ... cherished as true, to disinfect whole cities by beginning with the sewers, the origin and reservoir of all the mischief The author believes that he has shown that decomposition, to a most pernicious extent, is possible in soils ; that this is not a mere opinion, but a fact readily demonstrated ; but that decomposition may be arrested artificially to the preservation of health without the destruction of vegetation ; and that in these facts we have not only a surer basis in our reasonings on the...
Page 49 - ... experiments would be apt to frame. For the rays, to speak properly, are not coloured. In them there is nothing else than a certain power and disposition to stir up a sensation of this or that colour. For as sound in a bell or musical string, or other sounding body, is nothing but a trembling motion, and in the air nothing but that motion propagated from the object, and in the sensorium 'tis a sense of that motion under the form of sound; so colours in the object are nothing but a disposition...