363 ECONOMICS OF FORESTRY. 



the same species are present and the density is 

 alike, but the Redwood, congener to the Big Tree, is 

 added, and, in its narrow, long belt of distribution 

 from Oregon to the Santa Cruz Mountains, replaces 

 in importance the Douglas Fir, which seems to 

 lose in value in its more southern range. 



The extension of the Cascade forest over the 

 Sierra Nevada shows a much greater change, al- 

 though the same species continue in the composi- 

 tion with the same magnificent development, but 

 the Sugar Pine, a congener of the Michigan White 

 Pine, of ponderous development, is added and be- 

 comes the main and most valuable timber tree, and 

 the forest grows open, the undergrowth more scanty. 

 Here the giant Big Trees occur in occasional groves, 

 of historic interest more than of commercial value. 



Toward the south, both on the Coast Range and 

 on the Sierra, the value of timber growth greatly 

 diminishes, becoming reduced in size, the stand 

 opening more and more; finally, in the southern 

 ranges of the San Gabriel, San Bernardino, and 

 San Jacinto mountains, the timber of value. Yellow 

 and Sugar Pine and Red Fir, occurs only in groves 

 among the brush and chaparral which covers most 

 of the dry slopes. 



We have seen that the timber-producing area of 

 this Pacific coast forest may not be estimated at 

 more than round 60,000,000 acres, containing 

 somewhat over 600,000 million feet of merchant- 

 able timber. Upon the basis of a compilation of 



