260 GEOLOGY OF THE SECOND DISTRICT. 



To compare this iron with others, it is proper to assume bar No. III. as the standard, that 

 having been jiammered till of a dull read heat. The report already cited furnishes us with 

 abundant data derived from experiments, made with the same machine, on other kinds of bar 

 iron, in a similar state. Thus we have. 



Iron from Sahsbury, Connecticut, by a mean of . 



— Sweden, do 



— Centre county, Pennsylvania, do 



— Lancaster county, Pennsylvania, do 



— Mclntyre, Essex county, N. Y. (as above,) 



— England, cable bolt, (E. V.) 5 



— Russia, -u 



Hence it appears that the last only is essentially superior to the iron of Mclntyre. These are 

 among the best varieties of bar iron in point of tenacity. 



The fracture is of a light iron-grey color, silky lustre, and generally displays a compact 

 structure. It is worthy of remark, that most of the fractures took place in directions oblique 

 to the line of tension, and making with it, either in the breadth or thickness, one or more angles 

 of about sixty degrees each. 



The fibrous structure of the metal was very marked in cutting with the cold chisel, and 

 was further developed by acids on a part of No. Ill, on the surface of which delicate lines 

 were shown traversing a distance of several inches. The specific gravity in the annealed state 

 was, it appears, increased 1 - 2 per cent by hammer-hardening. 



In conclusion, it may be observed, that as a large and increasing demand for good iron 

 prevails in the United States, in proportion to the increase of finished and accurate machinery 

 requiring superior materials as well as workmanship, there can be no doubt that any quantity 

 which could probably be produced, if possessing the properties of that above described, would 

 command a ready market and the best of prices. 



Advantages of Adii'ondack as a location for the manvj'acliire of Iron. 



All the circumstances which are favorable to the successful prosecution of the iron business 

 arc centered at Adirondack, except one ; and this will be understood at once as referring to 

 its distance from market, without convenient means for transportation. At an earlier day, 

 this would be an obstacle almost insuperable ; but at the present time, when enterprises of 

 importance will be prosecuted notwithstanding distance and the interposition of mountain bar- 

 riers, this single obstacle can not prevent the successful prosecution of this important manu- 

 facture. 



At Adirondack, I trust it has been clearly shown there is no limit to the amount and quantity 

 of raw material ; and that this is of such a quality, as few if any locations in this country can 

 boast of affording. There is, too, a great supply of wood. The valley and mountain sides are 



