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continue to imitate t ^ e eixampte of our blessed Master , Jesus Christ ,, in the practice of virtue ; so that , at the close of their earthly career , an abundant entrance may be administered to them by God our heavenly Father , into the realms of eternal bliss , through Christ Jesus our Lord .
"And now , my dear friends , that the God of all grace may be with you all , is the sincere and affectionate wish of €€ Your faithful servant , " D . W . Jones . "
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588 Mr ~ £ uckmcft on the Atmosphere .
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Sir , Edgbastgn . CAN an adequate reason be assigned why the subject of the following paper should be unsuitable to your valuable pages ? Perhaps a little more variety of topics would
render the work more interesting to many of its readers , still , however , not losing sight of its avowed and leading characteristic . Whether I have done my subject sufficient justice
to remove all hesitation from your mind , is another consideration . If it should be thought that I am floundering out of my depth , the subject itself must be my apology . It served me for three or four hours *
amusement during a rainy day ; and assuming that all your correspondents , including myself , whether they give their initials , or a fictitious signature , or their real name , are all actuated by the little spark of vanity in
supposing they can say something worthy the public attention , I may be excused if I prefer the latter , as being more sincere , more straight-forward , more ingenuous , more manly and more responsible . I have always admired the intrepid magnanimity of Home
Tooke , when arraigned at the bar of his country for treason , and when he was cautioned about admitting some of his ovvn writing which was brought in evidence against him — " I have never , " said he , ** written a sentence in mv life , which even at this critical
moment I am either ashamed or afraid to avow . " State of the Atmosphere in August last . A cubic yard of eartli is generally rated to weigh a ton , but this is so far indefinite as to leave it uncertain
\ vftat quantity of moisture it may be supposed to contain , or what the den-
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sity <> f its substance . A pound of common soil will hold about on& . fifth of its weight of water to saturate it fully , that is , if all its moisture he completely evaporated it will then , absorb one part of water to four
before the water will begin to run off , the whole being put oh an inclined plane . What then becomes of this quantity of water daring a season of such excessive drouajht as we have lately witnessed ? Though its
tendency is to sink into the earth , vp . t qency is to sink into the earth , yet the process of evaporation by wind and heat is perpetually counteracting thW tendency , so that the springs which depend upon superficial moisture soon become dried up , and the water thus withdrawn , from the
surface has no station to which it can be assigned but in the atmosphere with which oiir globe is surrounded . However paradoxical it may appear to uninquiring minds that the circumambient air when in its hottest and
most transparent state contains more vapour than when we are enveloped in the most opaque and gloomy of our November fogs , it is nevertheless a demonstrable fact . Meterologists , and more especially our countryman Dalton , have experimentally proved
that the greater the heat of the atmosphere , and however pellucid and clear it may be to our vision , the greater the quantity of steam or moisture it will of necessity imbibe , and
this in a geometrical proportion to its intensity of heat : thus , air at a certain temperature will imbibe a certain portion of vapour and no more ; but double that heat , and you much more than double its capacity
for containing humidity . Supposing , then , the extreme difference in a square yard on the surface between absolute dryness and the total moisture that it could contain to be , as above stated , about one-fifth part , ft follows , that four hundred weight of
water might be withdrawn from each yard , and that this quantity might be sustained in invisible solution in the atmosphere , till nature , by some of its mysterious and wonderful operatio ns , shall condense the whole or a pap and return it to the Eartli in gentle
showers , or in overwhelming tornadoes and floods . To this , h owever , it may be objected , that the sur face yard of aoil never can be so euto-
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Citation
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Monthly Repository (1806-1838) and Unitarian Chronicle (1832-1833), Oct. 2, 1826, page 588, in the Nineteenth-Century Serials Edition (2008; 2018) ncse.ac.uk/periodicals/mruc/issues/vm2-ncseproduct2553/page/16/
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