Urtin.] fETROLECM FIELDS. 139 
The geology of the coast between Snug Harbor and Chinitna Bay, 
between the east side of Enochkin Bay and Bear Bay, and between 
Douglas River and Katmai does not warrant in the slightest degree 
any petroleum prospecting. Along much of this coast are only vol- 
ume and other crystalline rocks, in which the occurrence of petroleum 
is an absolute impossibility. 
Petroleum seepages are reported from the shores of Kachemak Bay. 
There is nothing in the geology of the region to disprove the occur- 
rence of oil on the north shore of the bay, but the author does not 
relieve that investment would be justified, at present at least, unless it 
is shown beyond doubt that good seepages exist. 
Seepages have been reported from various points on the Alaska 
Peninsula to the west of the Cold Bay region. Too little is known of 
the structure of this region to warrant public advice. 
The indications of petroleum in the Cape Yaktag region have already 
been described in a previous publication. No drilling has been done 
in this field and there is nothing to add to the previous descriptions of 
the geology. 
