52 The Siskiyou Island. 



of the underlying Eocene, is a chambered 

 shell, a near cousin of the Nautilus, the Aturia, 

 of fine form and well preserved. Another in- 

 teresting exposure of these Miocene fossils 

 may be observed at Westport, a few miles 

 above Astoria. The fossils here will be found 

 at the base of the hill south of the landing 

 and will be found to closely repeat the forms 

 at Astoria. 



Still farther up the river, at the base of 

 the foot hills back of Scappoose, these Mio- 

 cene fossils are again seen, and here they 

 underlie a good deal of volcanic rock, but on 

 crossing over the mountains into Tualatin 

 Plains the Miocene shells are again found in 

 their native sand stone. Southwest of For- 

 est Grove where Coast mountain streams cut 

 through the Miocene foot hills, the fossils are 

 again very abundant and very fine 1 all Mio- 

 cene. South of this, bordering Wapato lake, 

 they appear again in shales, and this border 

 land of the Miocene may be traced by its fos- 

 sils to the head of the valley at Eugene where 

 they appear in great beauty and abundance. 



