28 The Two Islands. 



into the more yielding portions, still further 

 altering the now metamorphosed mass. 



It will be readily seen that whatever re- 

 mains of shells, bones or leaf impressions 

 these older sediments may have contained in 

 their original condition, would be marred in 

 form, if not changed in substance, by the heat 

 and violence through which they passed, un- 

 til the record of life they once bore was 

 dimmed in portions less exposed to violence, 

 and in others entirely lost. 



It would follow, too, that after the violence 

 of this unheaval had passed away and quiet 

 was again restored around the newly made 

 islands, marine life would slowly regain its 

 place on these freshly formed beaches. 



In tracing the early stages through which 

 these islands passed, mention was made of 

 changed slates and limestones and their erup- 

 tive accompaniments of the granitic rocks. 

 So close are the points of resemblance be- 

 tween serpentines from Canyonville and Cow 

 creek in Douglas county, and those from 

 Canyon City in Eastern Oregon, that hand 



