the Sulphur Wells at Harrogate. iyy 
fulphur wells at Harrogate are very near to each other ; they 
might all be included within the circumference of a circle of 
feven or eight yards in diameter ; yet, from what has been faid 
it is evident, that they have not all either the fame tempera- 
ture, or the fame quantity of faline impregnation. This 
diverfity of quality, in wells which have a proximity of fitua- 
tion, is no uncommon phenomenon ; and though at the firft 
view it feems to be furprifing, yet it ceafes to be fo on reflexion : 
for the waters which feed wells fo circumftanced, may flow 
through ftrata of different qualities fituated at different depths, 
though in the fame direction ; or through ftrata placed both at 
different depths, and in different directions ; and that this is 
the cafe at Harrogate is probable enough, there being hills on 
every fide of the hollow in which the village is placed. 
With refpeft to the fulphureous impregnation of thefe wa- 
ters, I made the following obfervations. 
The infide of the bafon, into which the water of the 
ftrongeft well rifes, is covered with a whitifh pellicle, which 
may be eafily fcraped off from the grit-ftone of which the 
bafon is made. I obferved, in the year 1780, that this pellicle 
on a hot iron burned with the flame and fmell of fulphur. I 
this year repeated the experiment with the fame fuccefs ; the 
fubftance ftiould be gently dried before it is put on the iron. 
I would further obferve, that the fulphur is but a fmall part 
of the fubftance which is fcraped off That I might be certain 
of the poflibility of obtaining true palpable fulphur from what 
is fcraped off from the bafon, and at the fame time give fome 
guefs at the quantity of fulphur contained in it, I took three 
or four ounces of it, and having wafhed it well, and dried it 
thoroughly by a gentle heat, I put two ounces into a clean 
glafs retort, and fublimed from it about two or three grains of 
A a 2 yellow 
