Plate 7. 



Fig. 1. 



TTrought tiake ot -ray and black striped jasper, one-half thenafnial 

 size. Ow ot many similar specimens ftniiid by Professor Havden'a 

 party, ,Mi Henry's Fork of Green River, Wvoinins. dnnn<r the 

 geoloiiical exidoratlon of 1870. " ^ ^ 



Fig. 2. 



^'^l^'^r* "4 T>i"l<isb quartzite made from a bowlder of the drift from th« 

 Uintabs. Two views ; one-half size. " 

 about eight miles from Fort Bridgcr. 



From the plain near Dry Creek, 



