Lesley.] 



234 



[April. 



the Amber Gold Company sink their proposed shaft and report their 

 first dividend from what they find. 



To show the difi"erence between the rough statement of so many 

 yards of " soapstone," sandstone, limestone, " leather clay," and 

 coal, made by common well-masters, or even between the record made 

 out by careful treatment of bottled borings by an expert geologist, 

 and the complete and accurately minute section which a well-trained 

 civil engineer or mining superintendent has a chance to make during 

 the sinking of a shaft, I will add an unpublished and important sec- 

 tion of the air shaft of the Pennsylvania Railroad tunnel through the 

 summit of the Alleghany Mountain, copied from Dr. Jackson's MS. 

 notes of February 18th, 1858, 



