44 Bulletin of the New York State Museum. 



on the angle of slope : and the length on ore, 600 feet. The ore is 

 not very rich, but it does for Bessemer metal. The product was 

 shipped to furnaces in this state, and to Scranton and Bethlehem, 

 in Pennsylvania. The mines are equipped with three hoisting engines, 

 five boilers, two air compressors, twelve pumps, a washer, and branch 

 tracks from the several slopes to the main line of railroad. The 

 proprietors are the Magnetic Iron Ore Company, office 12 Broadway, 

 New York city. 



LITTLE RIVER MINES, Fine, St. Lawrence County.— The 

 Magnetic Iron Ore Company is developing the mines at Little River, 14 

 miles south-east of Jay ville. Dr. Emmons described the locality as one 

 of the largest ore beds in the county, and as having been worked 

 twenty-two or three years prior to his report.* A mass of iron ore 

 rising 60 to 100 feet above the valley of Little River, 800 to 1,500 

 feet wide and two miles long, in a general north-east and south-west 

 direction, has here been tested by diamond drill to a depth of 182 

 feet without getting; throuo-h to rock. The ore is lean and must be 



coo 



concentrated in order to its enrichment, and the possible separation 

 of the apatite. The natural ore averages about 42 per cent of 

 metallic iron. The Carthage and Adirondack railway terminus is to 

 be at the mines, on its completion in 1889. It is hoped that by 

 means of concentrating, the product can be used for Bessemer metal. 

 The successful development of these mines, like that of other large 

 ore bodies in the State, is dependent upon the economic concentra- 

 tion of the lean ore by magnetic separating machines. 



PORT LEYDEN MINE, Lewis County. — The iron mine in the 

 village of Port Leyden has been idle for about twelve years. The 

 ore is titaniferous.f 



III -THE HEMATITES OF JEFFERSON AND ST. LAWRENCE 



COUNTIES. 



SHIRTLIFF MINE, Philadelphia, Jefferson County.— The 

 Shirtliff mine was first opened in 1838J for the supply of the Ster- 

 lingville furnace. It produced a large quantity of ore, and was worked 



* Geology of the Second Geological District. Albany, 1S42, page 347. 

 t Iron ores east of the Mississippi River, John Birkinbine in "Mineral Resources 

 of the United States /or 1886," p. 47. 



I Hough: "History of Jefferson County," Albany, 1854, p. 558. 



