( 5 8 ° )

Flc$d t as I say, in the Chatmel. So sar as the Salt-Waters reach the Coun-try is Deem’d lesi Healthy. In the Freftes tbey more rarely are troubledwith the Seafinings , and thole Endemical Distempers about September andQftober. This being very Remarkable, it might perhaps be worthy theDilquibtion of the most Learned to give an Account of the various Altera- -tions and Fatal Effects that the Air has on Humane Bodies, espedally whenimpregnared with a Marine Sah ; more pecuiiarly when such an Air be-comes Stagnant.

There is one thing more Remarkable in Virginia ; Generally Twice in theTear , Spring and Fall. At certain Sprwg-Tides, the most of the Cattle willfet on Gaddmg, and Run, tho’ it be ao or 30. Miles , to the Rivent to Drinkthe Salt-Water, at which time there’s scarce any Stoppingof them.

As for the Wsters in the Springs in General, they are, 1 think somewharmore cager than thole in England ; in that I have observed, they requirefome quantiry more of Malt to make Strong Beer than our Englißj Waters t. and will not Bear Soap. I have tryed several by Infußng os Gah, andfound little Difference in the Colours , turning much what the Colour ofCcmmon Sacks in Taverns.

There’s a Spring in the IsieofWightor NdnzamonJ Comty vents the great-est Source of Water I e ver siw, excepting Hcly Well in Wales.

I could not Try any thing as to their Specifick Gravity, having neitherAquapotfe, nor thole other Glasses I had conrrived pecuiiarly for makingsuch Experiments, they being all lost with my other things. I had Glafltsblown would hold about y Ounces, others about 1 o Ounces, with Necks fofinali, that a Drop would make a considerable Variation ; with thescl couldmake much more Crhical and Satisfactory Obftrvations as to the SpecificalGravity of Liquore, having Critital Scales , than by any other way yet byme tried. I used this Method to Weigh Vrines, which Practice I wouldrecommend to the inquilitive and critica! Physicians: For there are moreSignal Variations in the Weights of Urines than one would at first Imagine;and when the Eye ean discover little, but judge Two Urines to be alike,they may be found to differ very much as to Weight. By Weight I find Ob-fervations may be made of Affeätms in the Head, which rarely make anyVisible Alterations in the Urine . I have found 2 Urinet not much unlilce,Dister 22 Grains in the Quantity of about 4 or y Ounces. But let themthat make thole Essays IVeigh ali their Urines when Cold, lest they bethete-by Deceived. ButtoReturn to the Spring Watrrs in Virginia. Theres, aSpring at my Lady Berklefs , call’d Green Spring , (whereof 1 have been os-ten told») so very Cold, that ’tis Dangerous Drinking thereof in Surnmer-Ttme, it having proved of Fatal Conscquence to several.

There be many Petrifyrrtg-Waters ; and indeed I believe few of the Wettersbut Participate ofa Petris jtng 'uality, tho’ there be few Tebbles or PavingSternes to be found in all the Country. But 1 have found many Sticks withCrttfly Congelations round them in the Runs of Springs ; and Stones Fi-guredlike Honey. Combs, with many little Stars as ir were fhot in thelioks,

Mr.