324 E. M. KINDLE 
show the faunas of the two localities to bear the closest resem- 
blance. 
The horizon represented by the fauna at Freshwater and Glacier 
Bays is not known as yet elsewhere in Alaska. The Kuiu Island 
Silurian fauna differs very materially in its facies from other known 
Silurian faunas of Alaska, but the same horizon appears to be repre- 
sented by the Silurian found by the writer on the Porcupine River, in 
northeastern Alaska, during the last summer. 
Fic. 3.—Lower Devonian limestone (B) and basal igneous beds (A) at Long 
Island. 
DEVONIAN 
No complete section of the Devonian is known in southeastern 
Alaska. The collections from various points taken together, how- 
ever, show the presence of Upper, Middle, and Lower Devonian 
horizons. The earliest fauna of the Devonian which has been found 
occurs in the section at Long Island, Kasaan Bay (13). The bed- 
rock of the shores of the bay is composed chiefly of the Kasaan green- 
stones and cherts. The limestone of Long Island and its associated 
igneous rock is supposed to be interpolated in the greenstone series. 
The surface rocks of the island comprise a limestone series resting on 
