Lesley.] iU4: [jan. 2 and Feb. 5, 



Magnesia a trace. 



Alkalies 2.54 



Phosphoric Acid 1.48 



Sulphur 0.05 (trace.) 



Loss by ignition 4.50 



Total 100.00 



At Howard Furnace the ore was analysed, &c., some years ago and 

 found to contain 28 per cent, of iron. 



The bed was here found standing at 80° towards the N. N. W. ard 

 only 22 inches thick. 



In the end of the Mountain south of Tyrone City this bed has been re- 

 cently opened at a height of 260 feet (by barometer ) above the Juniata 

 River, the slope of the surface being 40°, and the pitch of the bed at the 

 out-crop 60^ into the mountain (S. E). But this is due to the creep of 

 the out-crop down hill. The body of the bed stands vertical. 



There is 6^ feet of rock-ore between overlying sandy shales and under- 

 lying foot shales ; only the upper 22 inches of the bed in six plies is here 

 workable. 



At Dysart's, 4 miles south of Tyrone city, a tunnel 20 feet long, 575 

 feet (bar.) above the level of the Juniata, strikes the bed pitching 50° to 

 603 (at the two headings, right and left)* towards the N. 50° W. About 

 six feet of ore is hei'e mined and sent to Pittsburgh, via. Tipton Station 

 on the Pennsylvania Railroad at the foot of the mountain opposite the 

 mine. 



At the heading in Oct. 1873 was seen the following order of layers : 



Fossil ore, at mouth of tunnel in soft rotten shale 6 inches. 



Rock in tunnel 16 feet. 



Hard lean fossil ore 1 " 5 inches. 



Hard fossil ore 2 " 10 " 



Clay parting 2 " 



Hard fossil ore , 2 " " 



Soft shale floor rotted into compact mud, the water bearing stratum. 



In October 1873 a Pittsburgh furnace was doing good work mixing ^ of 

 this Tipton (Dysart) ore with ^ of a very pure ore, deficient in silica and 

 alumina, which deficiency the hard fossil ore supplied ; and that, without 

 any marked prejudice to the run of the furnace as to quantity, although 

 two-thirds of the Tipton ore went below 40 per cent, and one-third below 

 30 per cent, of iron ; the Tipton ore making good cinder, and thus re- 

 lieving a part of the pure ore from that duty. The quality of the pig- 

 metal produced after the mixture was adopted remained unchanged. 



This aspect of the future utility of this lowest deposit a of the fossil 

 ore series of N. V. is important. 



At Frankstown the bed sometimes reaches a thickness of ten feet. 



* Higher up, red sandstone at the surface dips 78°. 



