C 500 ] 
LXXXIV. si Letter from the Rev . William 
Henry, D. D. to the Right Honourable 
the Lord Cadogan, F, R. S. concerning 
the Copper-Springs in the County of Wick- 
low in Ireland *. 
My Lord, Ann-ftreet, Dublin, Apr. 18, 1752. 
Read June i8,y TAVI N G, in my progrefs to vifit the 
XjL charter-fchools, palled by the rich 
copper-mines in the county of Wicklow, I judge, that 
it will not be unacceptable to your lordfhip to receive 
fome account of them. 
Thefe mines lie in the fouthern part of the county 
of Wicklow, upon the river Arklow, on each fide of 
that river, and about feven miles weftward from the 
town of that name, among hills, that rife to the 
height of fmall mountains. 
The mine, which was formerly wrought on, is 
that of Ballymurtogh, on the fouth bank of the river. 
It yielded vail profit to the undertakers ; but, on ac- 
count of fome difference between Mr. Whalley and 
the company, it has been difufed for fome years paft. 
This is amply compenfated by the far 1 richer mines 
of Crone-Bawn (in Latin Corona alba) on the north 
fide of this river. 
Crone- 
* An account of fprings of the fame kind in Hungary may be 
feen in Dr. Edward Brown’s Travels , p. 68, 69, edit. 1685, fol. 
Count MaTigli’s Danubius Pannonico- Myftcus, tom. III. p. 25. 
and Matthius Belius’s Notitia Hungar'ta , tom. II. p. 393, 394. 
There is publilhed, in the Giornale dt Lctterati d' Italia , tom. 
XXVII. Art. IV. p. 186, iff feq. a fecond letter of S gnor 
Agoftino Soderini, of Venice, relating to the art of metallurgy, in 
which he deferibes the method of changing iron into copper by 
vitriol. 
