TIIK H!()N-BEAlMN(i IMEMP.KH. Ift3 



40, ;iu(l even ">() per cent. ( 'aretiil lueiisiirciiifiit ami sampliiiu- ot' the west 

 clitf of Peuokee j^-aj) at the ])assaye of Hail river thiniiuh the Peuokee 

 range showed that this clitf is made up of the followin;^- divisiims — these 

 divisions being lueasiuvd at right angles to the strike, l)eginuing with the 

 lowest ])arr of the cliff: lit feet, containing 44-;)4 per cent of metallic 

 iron; 7 feet (J inches, containing 1710 i)er cent; 18 feet, containing 41»-4 

 per cent: (> inches, nearly free from iron; (5 feet, containing 3(;'64 per cent; 

 3G feet, containing 4o"87 per cent. Above and below the lavers shown in 

 this cliff are others nearly or equally rich in metallic iron, alternating with 

 layers in which the iron is present, but in smaller (juantitv. 



The following fignres indicate the richness of various other thicknesses 

 at Penokee gap: 7 feet, containing 43'29 per cent; 2 inches, inclnded 

 within the preceding measurement, 62'21 i)er cent: 10-inch rich seam from 

 a different place, 57'r)2 per cent. The following are other figures, indicat- 

 ing- the content of iron in considerable thicknesses at various points on the 

 Penokee range from the Potato river westward: (1) "> feet, containing- 

 11 23 per cent; (2) 15 feet, containing 12-II9 i)er cent: (3) 15 feet, contain- 

 ing 25"8l percent; (4) 75 feet, containing 2()G'4 per cent; (5) 25 feet, con- 

 taining 3(M4 percent; (fi) 10 feet, containing 37 percent; (7) 40 feet, con- 

 taining- 37'75 ])er cent; (8) 20 feet, containing 3788 per cent; (9) 20 feet, 

 containing STOS per cent; (10) 3 feet, containing 38*75 per cent; (11) 58 

 feet, containing- 41 93 per cent; (12) 5 feet, cimtaining 44-43 per cent; (13) 

 150 feet, containing 45 per cent; (14) 3 feet, containing 4507 per cent; 

 (15) 75 feet, containing 48-12 per cent; (1(!) 15 feet, containing 4973 per 

 cent; (17) 50 feet, containing 53*46 per cent.' These figures, of course, 



'These figures are taken from tables ofaualysos given iu the third voliiine of the Geology of Wis- 

 consin, ]))!. 15(5-100. The s.iniplcs were mainly selectiil by R. 11. Ilvinj; ; ilia few ea.ses by K. T. .Sweet. 

 Tliey were all made by tal<in}; a large niini1>er of small pieces ai'ross the eiitin; thickness inilicated In 

 each case. The places from which the samples were .selected are as f(dl"ws: (1) Kxploring trench, 

 NE. i Sec. 1.5, T, 44 X., R, 3 W., Wisconsin; (2) exi)Osiire SW. i Sec. I, T. 44 N., R. 2 W., Wis.onsin; 

 (3) exposure .SE. i Sec. 36, T. 45 N., R. 1 W., Wisconsin; (4) exposure NW. i Sec. 21, T. 44 N., R. 

 ."> \V., Wisconsin; (5) is from the west side of tbe |iassagi' of tin- I'otato rivi-r through the Penokee 

 range; (6) exposure NE. i .Sec. IS, T. 44 X., R. 2 W., Wisconsin; (7) exposure SW, i Sec. 17, T. 44 

 N., R, 3 W., Wiscoushi; (8) exposure SW. i Sec. 1,T, 44 N., R. 2 W., Wisconsin; (;t) exposure on the 

 fcmrth principal meridian, .Sec. 19, T, t.-iX., R. 1 1'.., Wisconsin; (10) exposure near center of Sec. 18, T. 

 44 N,, E, 3 W., Wisconsin; (11) trench SW. i .Sec. 10, T. 44 N., R. 2 W., Wisconsin; (12) exposure 

 XE, i Sec. 14, T, 44 N,, R, 3 W., Wisconsin; (13) exposure NW, i Sec. 23, T. 44 N., R. 5 W., Wiscou- 



