710 



AMERICAN FORESTRY 



.. 



A FOSSILIZED REDWOOD 



This is one of the finest specimens in the forest. It is 26J/ feet in circumference and twelve feet 

 high. The roots are as large as an ordinary tree, and are embedded in solid rock. 



forests. That is to say, after the first 

 forest grew and was entombed, there 

 was a time without volcanic outburst 

 a period long enough to permit a second 

 forest to grow above the first. This in 

 turn was covered by volcanic material 

 and preserved, to be followed again by 

 a period of quiet, and these more or less 

 regular alternations of volcanism and 

 forest growth continued throughout the 

 time the beds were in process of for- 

 mation. 



The area within which the fossil for- 

 ests are now found was apparently in 

 the beginning an irregular but rela- 

 tively flat basin, on the floor of which 

 after a time there grew the first forest. 

 Then there came from some of the vol- 

 canoes, probably those to the north, 

 an outpouring of ashes, mud flows, and 

 other material which entirely buried the 

 forest, but so gradually that the trees 

 were simply submerged by the incom- 

 ing material, few of them being pros- 



