Difference between revisions of ".Mzc2.NzUwNA"
| Line 13: | Line 13: | ||
consequently the air must keep a greater quantity of | consequently the air must keep a greater quantity of | ||
water in dissolution, and suffere a less part of it to | water in dissolution, and suffere a less part of it to | ||
| − | + | be precipitated, in summer than in winter. I can- | |
not but allow that this system is extremely specious, | not but allow that this system is extremely specious, | ||
and that many phznomena are very happily ex- | and that many phznomena are very happily ex- | ||
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by a parallel very well kept up, that all the chemi- | by a parallel very well kept up, that all the chemi- | ||
cal expressions concerning dissolutions may with | cal expressions concerning dissolutions may with | ||
| − | propriety be applied to describe the several phae | + | propriety be applied to describe the several phae- |
nomena be examines, relative to the elevation and | nomena be examines, relative to the elevation and | ||
| − | suspension of water in air, as well as to its | + | suspension of water in air, as well as to its precipi- |
tation under different forms | tation under different forms | ||
| + | |||
109. If it was not too common a practice, to | 109. If it was not too common a practice, to | ||
| − | conclude things from words, | + | conclude things from words, I should in fact think |
these chemical expressions very conveniently adapted | these chemical expressions very conveniently adapted | ||
to explain a number of these phaenomena. But I | to explain a number of these phaenomena. But I | ||
| − | have rejected them here, on account of this | + | have rejected them here, on account of this consi- |
deration; that when I took in a greater number | deration; that when I took in a greater number | ||
of phaenomena, I found them no longer accurate, | of phaenomena, I found them no longer accurate, | ||
| − | any more than the general idea of the | + | any more than the general idea of the dissolu- |
tion | tion | ||
Revision as of 15:48, 3 December 2017
[ 55 ] ber) 17 degrees less than it was in the months of August and September.
108. I hope this paradox will be explained, and that the principles which may clear it up will draw useful consequences along with them. Those phi- losphers who look upon evaporation as a dissolution of water by air in the manner of menstrua, that is, by affinity, will easily apply their principle to the solution of part of these phaenomena The disso- lution is greater when the menstruum is warmer, and consequently the air must keep a greater quantity of water in dissolution, and suffere a less part of it to be precipitated, in summer than in winter. I can- not but allow that this system is extremely specious, and that many phznomena are very happily ex- plained by means of it. This is what Mr le Roy has shewn us in the memoir I have already quoted ; in which, without contending that ai r really acts as a menstruum with respect to water, he demonstrates, by a parallel very well kept up, that all the chemi- cal expressions concerning dissolutions may with propriety be applied to describe the several phae- nomena be examines, relative to the elevation and suspension of water in air, as well as to its precipi- tation under different forms
109. If it was not too common a practice, to conclude things from words, I should in fact think these chemical expressions very conveniently adapted to explain a number of these phaenomena. But I have rejected them here, on account of this consi- deration; that when I took in a greater number of phaenomena, I found them no longer accurate, any more than the general idea of the dissolu- tion
