OF THE COUNTY OF DOWN. at 



whilft it appears by thefe trials to be well faturated 

 with iron, it is otherwife exceedingly light, and free 

 from any conliderable mixture of heterogeneous mat- 

 ter. This water does not appear to have been much 

 ufed, but from feveral cafual trials has been found 

 effectual for the fcurvy, both internally and externally 

 wfed. Befides the chalybeate waters this county pof- 

 fefTes, there is another kind much more rare, and more 

 worthy of attention, as it is in many cafes attended 

 with great virtues 5 this is the fulphureo-chalybeate 

 water of Ballynahinch ;. this water rifes about two 

 miles from the town, towards the north-weft, on the 

 Jkirts of Slieve Croob mountain. It is very clear, 

 cold, and .of a very difagreeable tafte and fmell, like 

 the fulphureous water of Aix-la-Chapelle. The quan- 

 tity taken from three pints to, three quarts ; it fome- 

 times vomits, and fometimes purges, but thefe effects 

 are accidental, as its chief operation is by urine. Its 

 virtues referable thofe of other fulphureous waters, 

 particularly in its efficacy in fcorbutic diforders j it is 

 applied outwardly as well as taken inwardly, great be- 

 nefit often arifing from bathing in it. The impregnat- 

 ing principles of this water will appear by the follow- 

 ing experiment made on the fpqt and in Dublin, above 

 fixty miles diftance, after being taken up eight days. 

 A filver fixpence, being immerfed in it for the fpace of 

 twelve minutes at the fountain head, came out partly 

 of a leaden, and partly of a copper colour. That, which 



was 



