BULL. GEOL. SOC. AM. 



VOL. 18, 1906, PL. 65 





FiGUItE 1. BUEADCRUST BOMU, COLI.MA. ilEXICO, Euiri'TIOX OF 190.J 



Figure 2. — Deep tuaxsvekse Furrow.s of Lava Flow of 18G9, Coli.ma, Mexico 

 Courtesy of the American Museum of Natural History. E. O. Ilovey, pliotograpber 



VOLCANIC PHENOMENA COLIMA, MEXICO 



