il/r. RAY’j Itineraries. 159 
what purplifli: It works chiefly by 
Urine. Then we viflted the Sulphur- 
Well^ whofe Water, though it be 
pellucid enough, yet ftinks noifomely 
like rotten Eggs, or Sulphur 'aura- 
tufn diaphoreticum. It taftes very 
Salt, and upon Evaporation (as we 
were told) leaves behind a copious fixt 
Salt. Silver put into it is fuddenly 
changed into a golden Colour, and 
being left a while in it, becomes 
Tlackifh. Thence we went to f^J St. 
Mugnus his Well at Copgrave^ whi- 
ther a great Number of poor People 
refort to bathe themfelves. They 
puron their Shirts wetted in the water, 
letting them dry upon their Backs. 
This Water operates (if at all) by its 
extraordinary Coldnefs and Aftrin- 
gency: Near St. Mugnus is a Well 
of great Virtue for the Eyes, which ' 
(g) But according to 5t. Mongahs,. 
they 
