N. A. BOUNDARY COMMISSION. PLATE XVIII. 

Figure 1—Pembina Escarpment and West Butte. (§ 187-310.) 
: 

Figure 2—Pembina River. (§ 190.) 

Figure 3—Pembina River. (§ 190.) 
FISH SCALES FROM THE PEMBINA MOUNTAIN GROUP AND CRETACEOUS NO. 4. 
