236 The American Geologist. April, 1897 
in the fork of ( 'odar and Black rivers, tlie latter Howing into 
the Duwaniish and viniting the overflow of the lake with the 
waters of the former. Above the junction of Hhurk river the 
Duwamish takes the name of White river, which heads in the 
glaciers of Mt. Kanier. 
On the south side of Cedar river (tanon, eroded from the 
solid table land, the old Kenton colliery was opened near the 
mouth of that river. On the opposite or west side of the 
same subordinate waterslied was opened the Renton-Talbot 
colliery, and on the southern slope that of the present Renton- 
Co-operative Co. The following is a section of the Coal series 
under a dip of 16"^ to the east and a strike nearly at right an- 
'gles to tliat of the Tejon series at Brighton beach (N. 22^ E. ) 
between which point and Renton there thus appears the prob- 
ability of unconformity of the two series. 
1. Upper barren shales and sandstones of which an eroded 
and channeled surface of basset edges is uniformly over- 
flowed with schistose eruptive. This is in an ad- 
vanced state of disintegration from weathering 500-f- ft. 
2. Coal No. 1 (" Old Renton colliery ") 14-16 ft. 
3. Shale, slate and sandstone .30 ft. 
4. Shaly fossiliferous sandstone (bivalves) S^g f 1 . 
5. Shaly fossiliferous sandstone with leaf impressions .... 5 ft. 
*6. Coal No. 2 (" Old Renton colliery ") 8-10 ft. 
7. Shale and micaceous sandstone 62 ft. 
8. Coal No. 3, Renton (Talbot, and Co-operative Co.) 11-14 ft. 
9. Coarse grey sandstone, air-slacking, with three thin 
seams of lignite, as shown by boring 500 ft. 
On the opposite bank of Cedar river, around on the slope 
which rises from the lake to the Newcastle plateau, edges of 
lignite-baaring strata are nearly horizontally presented half 
way up the slopa. The actual dip, however, is concealed. 
Whatever this may be, unconformity with the Renton series 
is here again conclusively implied. 
The discovery and definition, as above set forth, of an im- 
})ortant separate development of marine Tejon (Eocene) strata, 
only slightly carbonaceous, as well as of inferential or con- 
structive unconformity with the productive lignite series of 
*In seam No. 2 was found, lengthwise of the gangway, the stump of 
an immense tree in progressive stages of alteration from comparatively 
.sound l>arl< and woody fibre toward the butt to silicified products only 
slightly bituminized toward the smaller end. This occurrence is de- 
scribed by Mr. Wliitworth, who furnished the above section, as undis- 
tinguishable from the existing species of native cedar. 
