F. JR. Van Horn — Pisanite and Arsenopyvite. 41 



Fig. 1. 



Fig. 1. Open cut workings at Isabella, Tennessee, showing light-colored 

 deposit of Pisanite above water in the lower right hand corner. 



Fig. 2. 



Fig. 2. Nearer view of Pisanite deposits showing stalactitic and botry- 

 oidal formations. 



