PLATE II. 



FlGiTRE 7 (page 31) represents a section of a dike of iron ore extending across the 

 lamination of the schist. Jackson J\line, Negaunee. 



Figure 8 (pages 31, 32) represents in section the relations of a decomposed hema' 

 tite ("soft hematite") to the schist. In this case the curvature and dislocation of 

 the schist by the upthrnst of the ore is well shown, as rejiresented along the curve 

 h, c. Of our own knowledge we cannot state that the part a belongs to the hematite 

 on the right, as represented. Jackson Mine, Negaunee. 



FiGTJKE 9 (page 32) shows a section of jasper and ore intniding in a wedge- 

 shaped mass obli([uely through the schist. Jackson Mine, Negaunee. 



FiGiTKE 11 (page 32) represents in section the intrusion of ore in a dike of varying 

 dimensions between and across the laminae of the schist, bending them in different 

 directions, as shown to a certain extent in the figure. Jackson Mine, Negaunee. 



