NATURAL HISTORY of NO RWAT. 201 



Makkedals-work in Hadeland, four Norway miles from 

 Chriftiania. 



Kongfberg-work has for fome time been intermitted on account 

 of faving the coals for the filver-mines. 



Laurwigens-work belonging to the county of that name, is the 

 largeft and of the greater!: produce throughout the whole country. 



Leilas in Gulbrandfdale below Dofrefield, was opened a fecond 

 time in 1 710, Mr. Swedenborg defcribes it in pag, 168. 



Mofle-work near the town of Mofs. 



Nefs-work not far from Laurvigen, and belonging to the fame 

 proprietor. 



Oudals-work in the diftrid of Solfer; the ore of this is poor, 



Vald near Krageroe. 



Ulefos, likewife called Haldens-work, one Norway-mile and a 

 half from Skeen. A particular circumftance of this work is, that 

 the iron-mines run under a lake, fo that for a quarter of a mile, 

 the roof of the mines has a deep water over it, the motion of 

 which may be plainly heard within the mine. 



It remains to be obferved, that iron was the firft metal wrought 

 in this country, and many hundred years before the working of 

 the more precious metals was thought of, and by all accounts the 

 oldeft works are thofe of Eilefield near Saint Thomas's church, 

 and in Leffoe and Edfwold; but the moor-iron was certainly the 

 firft difcovered. Ol. Wormius fays, « Tacitus refert, Gotthones 

 coluiffe ferri fodinas. Agricola eas celebrat, quae inter fegnedali- 

 am et ofterdaliam funt, ut et in Telemarchia ad tertium a feida 

 oppido lapidem eruuntur. 



SECT. XIV. 



By all the intelligence I have been able to acquire, tin has n^tL ead . works 

 yet been found m this country, but in the county of TarhW 

 lead is found mixed with the filver-ore, as I have before men- 

 tioned^ this lead is faid to have a hardnefs in it, which renders it 

 not fo ht for ufe in the Kongfberg founderies as could be wiflied ; 

 and therefore it is generally difpofed of to the Englifh The old 

 grooves near Chriftiania or Aggerhuus-caftle, are faid to have 

 been worked in fearch of lead and copper, and not for filver-ore 

 as Agricola pretends. 5 



3 But 



