230 The American Geoloyist. April, i897 
baseleveled basset edges ol' tlie wliole sandstone series form a 
marginal plateau, some 15 feet above tide, like the tabidar 
eroded surface at Alki point. Thus a low escarpment, four or 
five times higher tlian at that point, is continuously presented 
back of the beach as a natural sea wall, all the wny round the 
point from Blakely harbor to Rich's passage. Back of the 
marginal plateau, the same formation rises in mural cliffs, 
some 300 feet. A complete section of some f3,000 feet across 
the strike is finel}^ exhibited along the beach. The strike and 
dip of the whole series (Tejon) are uniform on both shores of 
the sound, the main channel having been eroded directly across 
the upturned belt. 
This belt, as a whole is characterized b}' soft, heavy-bedded 
grey sandstone, occasionally fossiliferous and carbonaceous, 
alternating with shal}^ non-fossiliferous members, fissile, soft 
and highly frangible, and exhibiting a conchoidal fracture. 
Weathered surfaces are crimson and brightly variegated. A 
highly fossiliferous member is a conspicuous feature at the 
extremity of Restoration point (Decatur reef). Like the fos- 
siliferous bed at Fossil bluff, this is also, but less extensively, 
flecked with fragments of carbonized vegetable products. The 
two occurrences are lithologically similar. On the Blakely 
harbor shore, at the upper landing, a bed of lignite from two 
to three feet in thickness is exposed at low tide. Massive 
fragments from ablation of this seam are deeply imbedded in 
a raised beach. A seam of lignite is said, likewise, to occur 
below tide south of Alki point. A similar occurrence at 
Brighton beach has already been noted. This, like the fossil- 
iferous member, probably marks a distinct horizon at the 
several points mentioned. 
Mention may now be made of the interesting circumstance 
that the solid structure as presented in the promontory of Res- 
toration point is limited to that once insulated area. As a 
comparatively recent event, this area lias so far been re- 
elevated as to connect its base with the main island (Bain- 
bridge). This is strikingly indicated not only by complete 
erosion of the sandstone series directly across the strike from 
the head of Blakely harbor, and its replacement by alluvial 
material, but also by the raised beach which is a part of such 
replacement. This occurrence is well exhibited by extensive 
