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Show [M. P.] 0ft! Czflzzlatz'o/z 9f lmm z'zl All}. 511 arxl‘e from abfolute difcharges, (and it may be fuppofed fro vation that they do m obfer- not,) then perhaps the fluid may be confidered thefe moments as und at er attend it in its infidtzli the operation of certain accidents that may a/I f. -lndeed thol'e llill and detached clou qf [lg/5t, {0 often fee n in the auroras, out d: ofrcach of the northhar.dly to be ' accoun . ted for, are ' _even allowing the theory, without' {uppoling an infillation that is in fome degree permanent. El [ I §7. " Thus acircu lation of [humid] air is " atmolpherc."-Th kept up in our ere are fome facts to be rela may elucidate our auth or's eonjeétures. 1". The ted here, which on our atmolphcre is hel (fix? n/‘t/f'e flm d to be powerful enough , to give an :zlrnoil: 1nflex1ble diree‘hon to the [newer air (or trade rwizzdrj in the northern Atlantic, to the vail diflance of 2000 mile s from the equator; (which is near 7} of the diltance to the polar icecake, afterwards {poken of.) -. 2°. The cour fe of thefe trade winds abo of cancer, being to the ut the tropic "art/Juan! of enli, implie s agrmt gammy made in thofe [muff latitntles where thefe winds are only at "1/1. and as the air in there part ; s is molt rarificd and fivel led, {uch va- cancy can only happen fro m the air's rifing; partitul arly as the {en there keeps the heat at a tole rable equilibrium, and vapour fuppofed to increale the vol may be ume of air. - 3°. Only abo ut fi of. the equator appears to pals over land ; the relt extending alon g rwatcr, much of which water is ther efore in the way of the heated air's im- bibing ".-4°. A {mall thin llream of air, polling throug h colder air, would quickly lole its heat ; but where a .Wfl mzzfi rfrwar m air rifcs, ({ueh as a {egment ofthe atmofphere,) though the 1mm- part s of it that occaflonally touch cold er foreign bodies may be {peedily cooled , yet the circumflances of the fitu ation and expoiure only can be cxpceted to cool the inne r parts. Thus, the valt mafs of waters heated by the tropical fun in theA tlantie, and driven by the tropical winds in a heap towards the bay of Mexico, (where it bec omes ltill more heated from being fiationar y, and this amid furrounding hot lands ;) when it comes to run itl‘ elfofl‘through the gulph ofFloi‘ida, carries ['0 much heat along with it, tha tDr. Franklin foundit at 81° 1 1‘ [Such as the being dillnrbed by the neigth urhood or removal of the fluid in the regions below (which may be {uppofed moving about there in clouds or otherwile ;) or the being forced to undergo a frelh difiribution from the local mereafe or diminution ofits quantity; or the being affefled (amounliug not only to mere change of pofition by undulations in the almofphere, the fize of the rufetvoirs in which it is confined in the fluid, butto an .ilteration'of ;) with perhaps various other Circumflantcs. E. _ "' [The proportion of land to water is indeed greater in the other parts of the ‘ro ict. ‘ . i) [In the tropics mflwara' of the Weft Indies, at the fame realm, ithas been found only at 77° (of Fahrenh eit.) 13.] m |