THE EXTRUSIVE PROCESSES. 



595 



matter ejected is not necessarily great. Compared to the massive 

 extrusions of fissure eruptions, it is usually rather trivial; but the 

 volcano makes up in demonstrativeness what it lacks in massiveness 

 of product. 



Fig. 458. — The volcano Colima, Mexico, in eruption. March 24, 1903. 

 (Jose Maria Arreola, per Frederick Starr.) 



