Farther Inquiries Into the Changes Induced on Atmospheric Air: By the Germination of Seeds, the Vegetation of Plants, and the Respiration of Animals

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W. Blackwood, 1811 - Air - 375 pages

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Page 207 - small particles of bodies certain powers, virtues, or forces, by which they act at a " distance, not only upon the rays of light for reflecting, refracting, and inflecting them, " but also upon one another, for producing a great part of the phenomena of nature?
Page 207 - I do not here consider. What I call attraction may be performed by impulse, or by some other means unknown to me. I use that Word here to signify only in general any Force by which Bodies tend towards one another, whatsoever be the Cause.
Page 182 - ... being burnished, was evidently copper; but the opposite wire had no such coating. Upon reversing the direction of the current of electricity, the order of the phenomena was of course reversed ; the copper being shortly redissolved by assistance of the oxidating power of positive electricity, and a similar precipitate formed on the opposite wire.
Page 272 - ... much better than in common air, but I had not then given it any name. At this all the company, and Mr. and Mrs. Lavoisier as much as any, expressed great surprise. I told them I had gotten it from precipitate per se, and also from red lead.
Page 252 - Inductio enim, quae procedit per enumerationem simplicem, res puerilis est, et precario concludit, et periculo exponitur ab instantia contradictoria, et plerumque secundum pauciora quam par est, et ex his tantummodo quae praesto sunt, pronunciat. At inductio, quae ad inventionem et demonstrationem scientiarum et artium erit utilis, naturam separare debet, per rejectiones et exclusiones debitas; ac deinde post negativas tot quot sufficiunt, super affirmativas conclu.dere...
Page 178 - ... the oxygen from the acid, and the hydrogen from the water are respectively repelled; and the new combination produced. I have attempted some of the experiments of decomposition and transfer, by means of common electricity, making use of a powerful electrical machine of Mr. Nairne's construction, belonging...
Page 207 - The attractions of gravity, magnetism, and electricity, reach to very sensible distances, and so have been observed by vulgar eyes ; and there may be others which reach to so small distances as hitherto to escape observation ; and perhaps electrical attraction may reach to such small distances, even without being excited by friction.
Page 342 - ... and the free atmosphere almost constantly holds in mechanical suspension solid substances of various kinds. In the common processes of nature, all the products of living beings may be easily conceived to be elicited from known combinations of matter. The compounds of iron, of the alkalies, and earths, with mineral acids, generally abound in soils. From the decomposition of basaltic...
Page 177 - The oxygen of a portion of water is attracted by the positive surface, at the same time that the other constituent part, the hydrogen, is repelled by it; and the opposite process takes place at the negative surface; and in the middle or neutral point of the circuit, whether there be a series of decompositions and recompositions...
Page 210 - Qu. 4. Do not the Rays of Light which fall upon Bodies, and are reflected or refracted, begin to bend before they arrive at the Bodies; and are they not reflected, refracted, and inflected, by one and the same Principle, acting variously in various Circumstances?

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