[ 148 I 



petually the iron with which the vegetables arc more or lefs 

 impregnated, it will not appear furprizing that the river of 

 Oughterard, as well as the neighbouring fountains, (hould be 

 ferruginous. Thefe ochreous fediments are therefore only the 

 dregs formerly abandoned by the river when it was> of a greater 

 extent on the banks, or the immediate products of the decora- 

 pofition of the turf, of which the place is now dripped^ 



i6th. We hav€ faid in fedion fecond, that the fouthern fides of 

 the mountains of Glan were granite. The northern fides are entirely 

 flate. It is in the flates that the different veins, commonlv known 

 by the name of the mines of Glan, are wrought, or rather under- 

 taken, which we are about to defcribe in regular fucceflion. Firfl, 

 however, allow us to fay a few words of the country in which 

 they are found. 



17th. The mountains of Glan form a chain round Loughcorrebj 

 and dip into it under an angle of about forty degrees. Theie 

 fummit viewed from the lake may be near four hundred feet of 

 perpendicular height. It is in the middle of this height, and in 

 the lower parts of it, that all the mines have been difcovered. 



1 8th. The flate of which they are compofcd is difpofed into 

 very regular beds, inclining forty-five degrees at one time in the 



diredion 



I 



