does more Hurt than if the Part were The gene-kept immerfed in cold Water. When ral Effects the Corpufcles of Blood, or Juices are of Cold. ftorkened, or united, or made craffer by Inconve Cold in any Part, Wet on the Feet, &c. thofe Maffes, as they are circulated, ftop in the ftraightest Paffages, aud cause Obstructions there, and the Juices fo coagulated, and these they stop in the ftraight Paffages, are wanted in the Places whither thefe Paffages lead. For if A and B unite together, they cannot pafs where either of them would have paffed alone, nor fupply their different Offices where they can pafs. Suffering the Belly to cool too nience of much, makes the Steam there condense, the Belly and the Juices prefs in, and caufe the Cobeing too cold. lic, or affect the Guts, according to their Qualities, caufe Loofenefs, &c. and perhaps, condenfing the Steam too much by Cold in any Part of the Body, makes fome Secretions of Juices into that Part, which may contribute towards caufing Pains and Rheumatifms, as well as the Stagnation of the Juices. And Cold may have the fame Effects upon the Steam in the Nerves, though that be not fo eafily perceived.. When any of the inward Glands are ftraightned by Swellings, Stoppages, &c. they fecrete fharper Juices than ufual, and and have different Effects upon the different Parts: These fecreted into the Lungs and Throat, tickle the Parts, caufe Coughing, &c. How these Efforts in the Lungs we call Coughing, are performed, whether by Phlegm, or fomething which fwells the Glands, ftopping the Steam till it break out with greater Force, or whether when any fuch fharp Juices tickle or offend the Lungs, or Neck of the Windpipe, it occafions thofe Convulfions, and how that can be involuntarily performed by the Affiftance of the Muscles, or whether the Neck of the Wind-pipe be fo contrived, that when any Thing offends, it shut without Direction of the Will, as our Eye-lids do, and the Force of the Steam and Air breaks out in Jirks, deferves to be confidered. And perhaps, je&ture the Cold in the Northern Countries may about the shut the Pores of the outward Skin, or Itch. straighten them so much, till they retain the Salts and fharp Juices in the Veffels and Glands, which fhould be perfpired there, and cause the Itch. When there what reis any thing in the Blood, to be thinned quired upor driven off, the Steam fhould not be on the firft abated too much. When the Steam with-Cold. in is almost wholly condensed with Cold, warm Fluids or Spirits which will pafs the Effects of Effects of Air. the Pilorus, if it be open, or rife fooneft into Steam and pass, refreshes one foonest. Or if Cold have condensed the Steam, and let in the Juices, warm Fluids which will pass fooneft into the Guts, and dilute or foften the Juices, give Eafe fooneft. Agues the When the Air is charged with cold, hucool, moist mid Matter, it bears not off enough of that fort of Matter from the Lungs; and perhaps, alfo leaves fome of the Matter it carries there, and condenfes and clogs the Steam, and if it be discharged among the Juices into the Stomach, may cause Agues, &c. and when it has cooled and contracted the Stomach too much, the brinous Juices (which I fuppofe come Conjecture laft) will discharge in too great Quantity upon their into the Stomach, raise the cold Matter being pe- there into Steam, and cause hot Fits, and the different Degrees of Heat and Cold between Day and Night, may make them periodical. riodical. ift, Rarefaction of the Blood, and Ex the Veffels. O CHA P. XVII. The Effects of too much Heat. Utward Heat thins and expands the panfion of and Pores; and expands and the opens Veffels 1 Veffels and Pores, and gives free Paffage for the Steams outward. Outward Cold condenses the Steam, thickens the Blood and Juices, in the Veffels and Pores, contracts the Veffels, fhuts the Pores, and hinders the Paffages of the Steam outward. And the greatest Danger feems to be Danger of when the Seafons change very fuddenly; when the Steam is heightened, before the Paffages and Pores be opened, the Blood thinned, and prepared by Degrees; or when the Seafon becomes fuddenly or Cold. cold, whilft the Paffages and Pores are open, the Blood thin, and the Steam fudden Heat. Climate. high. When any one removes fuddenly Change of into a hotter Climate, and where the Preffure of the Air is greater, it lets go the finest Juices at the Pores, and preffes too great a Quantity of the fharp Juices into the Stomach and Guts, and causes Fevers or Fluxes. When the charged with too much Heat, Air is Too hot Air the orders. volatile Occafion Salts, &c. it will not take away a due of contaProportion of fuch Matter from the Lungs, gious Difand perhaps leaves fome there, which being fecreted with the Juices into the Stomach, cause hot Fevers, &c. And when the Salts are extremely sharpened by Fermentation, infectious Diseases, &c. Air The Recharged with the contrary forts of Mat-medies ter, proposed. ter, or pure, or in Motion by Wind, if the Disorder be not gone too far, prevent, however abate it. And 'tis likely Food not too fluid or thin, which has had the Spirits and Salts extracted out of it, might ftop a Fever, by clogging the Juices, and discharging them downward. I have seen about a Quart of Man's Exmon Ex- crements, which had been fome Days periment difcharged, thinned with as much Ale, jecture poured into a Horfe ftark mad, in that upon it. violent Diftemper they call the Staggers, A com and Con The Con dition of of which they commonly die in a few Hours, and the Diftemper abated, and the Horse recovered; whether the Cause proceeded from too violent a Ferment in the Stomach, which that abated, deferves to be confidered, The Effects the Matter in the Air, and the different Gravity of the Air, have upon Animals during the Time that Rain rifes. THEN Rain is rifing, the Preffure of the Atmosphere is leffened, and Awhile the bundance of Corpufcles of Heat, and the Body Rain is rifing. Moisture, |