C 794 ) 
^ of Wight County : There's a Spring in the Ijle of Wight 
or NanzamonJ County vents the grtateft Source of Water 
I ever faw, excepting Holy Well in Wales, but I had not 
opportunity to make experiments thereof I tried like- 
wile fome Springs on the Banks of Tork River, in New 
Kent and Gloucejier County, but found them vary very 
little as to Colour. I could not trie any thing as to their 
fpecifick Gravity, having neither Aquapoife, nor thofe 
other Glades I had contrived peculiarly for making fuch 
Experiments, they being all loft with myotic things. 
I had Glaffes blown would hold about Five Ounces,others 
about Ten Ounces, with Necks fb (mall, that a Drop 
would make a confiderable Variation; with theie I could 
make much more critical and (atisfa&ory Obfervaticns 
as to the ipecifical Gravity of Liquors, having Critical 
Scales, than by any other way yet by me tried. I uled 
this method to weigh Urines, which Pra&ice I would 
recommend to the inquifitive and critical Phyficians. I 
had made many Obfervations hereof, but all Notes were 
like wife loft with my other things. Yet I have begun 
afrellt ; for there are more fignal Variations in the 
Weights of Urines than one would at firft imagine; and 
when the Eye candifcover little, but judge two Urines to 
be alike, they may be found to differ very much as to 
Weight. By Weight I find Obfervations may be made 
of Affedions in the Head, which rarely make any vifible 
Alterations in the Urine. I have found two Urines not 
much unlike differ two and twenty Grains in the quan- 
tity of about four or five Ounces : But let them that 
make thefe Eflays -weigh all their Urines when coid, left 
they be thereby deceiv'd. But to return to the Spring 
Waters in Virginia* There's a Spring at my Lady Berk- 
leys, called Green-Spring, whereof 1 have been often told, 
fo very cold, that 'tis dangerous drinking thereof in 
Summer-time, it having proved of fatal Confequence to 
v feveral. I never tried any thing of what nature it is of. 
There 
