The Development Theory. 199 



Fuca straits do now to Puget Sound. A broad 

 beautiful bay extending southward from this 

 strait to where Eugene City now stands, 

 fringed with deep inlets into which mountain 

 streams poured from the same valleys these 

 streams now occupy. This broad stretch of 

 inland water let us call the Willamette sound. 



Another, and far greater, extension of the 

 Columbia river stretched from where Walla 

 Walla now stands to the Yakima valley, mak- 

 ing here, too, an extensive inland sea. 



Still another extension reached frorh 

 Snake river to the westward to and including 

 the present Klamath marsh. No facts in the 

 natural history of the country are plainer than 

 the evidences of these former extensions of 

 this great water course. 



Nor was this the beginning; far from it. 

 If now we take another step into the great 

 past we shall find still the same Columbia 

 river, but now only as a connecting series of 

 links between frequent lakes large and small. 

 A river whose banks w r ere covered with palms, 

 whose lakes and streams were frequented by 



