Two Essays; One Upon Single Vision With Two Eyes The Other On Dew

Paperback | February 8, 2012

byWilliam Charles Wells

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1818 Excerpt: ... a greater quantity of fluid, than a similar plant exposed at the same time to the open air. Again; the small quantity of air, contained in the case, must soon be replete with moisture, after which, the whole of what is further emitted by the plant will necessarily assume the form of a fluid, whatever may be the condition of the external atmosphere; whereas, during even the clearest night, only a part of the smaller quantity of moisture, emitted by the exposed plant, will be condensed on its surface. In the last place; notwithstanding the circumstances, which favour the appearance of moisture upon inclosed plants from their own transpiration, still the quantity observed on them is said to be, for I have made no experiment myself respecting this matter, much less considerable, than what is seen upon plants of the same kind, exposed to the air for the same time, during a calm and serene night. PART III, OF SEVERAL APPEARANCES CONNECTED WITH DEW. I HERE are various occurrences in nature, which seem to me strictly allied to dew, though their relation to it be not always at first sight perceivable. The statement and explanation of several of these will form the concluding part of the present Essay. I. I observed one morning, in winter, that the insides of the panes of glass in the windows of my bedchamber were all of them moist, but that those, which had been covered by an inside shutter, during the night, were much more so, than others which had been uncovered. Supposing, that this diversity of appearance depended upon a difference of temperature, I applied the naked bulbs of two delicate thermometers to a covered and uncovered pane; on which I found, that the former was 3 colder than the latter. The air of the chamber, though no fire was kept in it, was at this...

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1818 Excerpt: ... a greater quantity of fluid, than a similar plant exposed at the same time to the open air. Again; the small quantity of air, co...

Format:PaperbackDimensions:90 pages, 9.69 × 7.44 × 0.19 inPublished:February 8, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217945368

ISBN - 13:9780217945363

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