1877.J ^^^ [Frazer. 



for tlie supposition, we ought to be able to follow one or more belts of ore 

 in a tolerably straight course from one formation into the other. 



On the general map to illustrate the report of 1875, lines were drawn 

 from the Frankliutown ore diggings, E. 27'^ N. and W. 27<J S. The first 

 of these passes through the locality where ore has been prospected at 

 Meyers', Ellicker's, and Kimmel's. The W. 27° S. line passes through the 

 town of Whitest own (or Idaville), where was a once famous iron mine. 

 All these three occurrences are clear of the mountain range. The first two 

 are in the New Red, the last in the older (Huronian) crystalline schists or 

 in the mixed marginal formation. Continuing this line still further W. 

 27 ^ S. it cuts the very singular ore mine of G. Coles in the Catholic Val- 

 ley (a small vallej'- among the South Mountain ridges). This same line 

 emerges in the Cumberland Valley where several new ore pits sunk by 

 Col. Wiestling have proved the existence of ore.* 



Drawing a parallel line of W. 27'^ S. from the Dillsburg group, we cross 

 the Bender, McCormick and Williams limouite mines in the first high 

 land of the mountains about 6.5 kilometers (or a little more than four miles) 

 S. W. of Dillsburg. Near the Chambersburg turnpike this line crosses the 

 " Furnace bank " opening, which can be seen from the turnpike on the 

 brow of a steep hill just across (W. of) the Connococheaque. 



If we move the parallel ruler from this line till it pass through Pine 

 Grove, and draw another line, this latter will very nearly pass through 

 Medler and Sayler's and the Thomas Iron Co.'s banks S. E. of Papertown, 

 in one direction, and through the Hoosac Run Mine of the old Caledonia 

 Furnace property in the other, emerging from the mountains near the 

 mouth of Cold Spring Ravine at the ore opening of Mr. Good. 



Thus it will be remarked that not only does the characteristic strike line 

 of the old Huronian rocks enable us to pass from known ore localities in 

 the older, to known localities in the newer formation ; but all the important 

 mines of this particular region yet known in both formations can be con- 

 nected together by two or three such lines. 



* It is doubtful if the latter is more than a coincidence, as the portion of this 

 line between Coles' ore mine and the Cumberland Valley probably crossses the 

 line of a great fault and thrust : the most important dynamic element in the 

 formation ofthe.se mountains. 



