[ 4 - / 0 ] 
XLV. Of the vitriolic Waters of Amlwch* 
in the IJle of Angle fey ; with occajional 
Remarks on the Hartfell Spaw, defer tied, 
in the firfi V olume of the Edinburgh EJfays 
and Ohjervations phvfcal and literary \ and' 
in the \tyh Volume of the Philofophical 
*Tr anf aft ions ^ and their Comp ar if on with 
other Waters of the fame Clafs . By John. 
Rutty, M. D* 
Read Jan. 17, r n VRE truly vitriolic waters, altho’ by 
much the ftrongefl of the chaly- 
beates, are fo rare in companion of the ordinary cha- 
lybeates, that we have fcarceany accounts of them in. 
the memoirs of the learned, nor any particular hi- 
ifories of fuch waters, until of late ; and therefore, it 
is prefumed, that an additional account of a certain 
notable water of this clafs may not be deemed un- 
worthy of being prefer ved. 
Such a water is that of Amlwch, fituate on 
Tralklwyn mountain, in the parilh of Amlwch, iir 
the Ille of Anglefey, which was fent me by Ambrofe 
Lewis, of Beaumorris, having been bottled May 31, 
1 757, and arrived in Dublin June the 3d following. 
It appears, by the hydrometer, to be as light as 
diftilled water, notwithstanding its ftrong impregna- 
tion. 
It is of a fubacid talte, and very naufeoufly vitri- 
olic ; a lalting imprehion of that fort continuing in 
the throat giving fufpicion of copper, of which, 
however*. 
