206 



The Ohio Journal of Science [Vol. XIX, No. 3, 



is completely reduced to charcoal. Some of the logs so charred 

 are as much as a foot in diameter. (See below). In other 

 places where the original ground has been uncovered by erosion, 

 the remains of the mat of vegetation that covered it lie in place 

 as a sheet of charcoal. (See page 207). 



At a few places around this lower end of the mud flow the 

 trunks of the trees standing above the level of the flow are 

 scorched as though by a grass fire. But, for the most part, 





Photograph by L. G. Folsom 



THE TRUNK OF A TREE ENGULFED BY THE MUD FLOW. 



Although a foot in diameter, it was entirely reduced to charcoal by the heat of 



the mud flow. This section was found at the extreme limit of the zone 



of incineration, seventeen miles from the crater of Katmai. 



