Kinahan — On Irish Metal Mining. 317 



gulch placers, and shelf or bar placers. [Possibility of gold being 

 found in the Co. Wicklow. —Proc, R.D.S., February 19th, 1883.] 

 In the Wicklow diggings the reefs have been unsuccessfully 

 looked for ; while the gold was principally worked in the " shallow 

 placers," and in a few cases in the " dry gulch placers ; " but 

 neither the " deep " or " bar placers " have been explored, at 

 least in modern times. Tin was found in some of the " shallow 

 placers." 



Fluorspar is recorded as occurring both crystalline and massive 

 in the Glendalough Mines ; but the quantity is not stated. It is 

 now valuable as a flux for iron. 



NOTES IN PEESS. 



Donegal, Ordnance sheet 58. — South side of Glenaboghill Lake, one 



mile N.N.E. of Fintown ; a N.E. and 

 S.W. lode of Silverlead. 



,, ,, 50. — At the head of the Owenbeg, Glen- 



do wan, a thin lode of lead. 



Bog-iron-ore. — Mr. "W. E. Adeny states : "After it has been used 

 for the purification of the gas, the ammonium salts are first extracted 

 from the spent ore by means of water ; the fine ferriferous powder 

 deposited being very valuable in the manufacture of brown paint. The 

 residue then dried and burnt for sulphuric acid manufacture. The 

 cinder left after burning off the sulphur is often sent back to be re- 

 used for washing gas." 



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