BULL. GEOL. SOC. AM. 



VOL. 10, 1898, PL. 1 



-— ^ 





Figure 1— Tourmai.ixe yiiiisr 

 From second locality, Belcher Hill, Colorado 



J'^IIiUltK -l — Tcll'RMAMNE ScHIST 



From second Idculitv, Bclclicr Hill, Colorado 



TOURMALINE SCHISTS 



