338 Scientific Intelligence. 
ngland having Archean th 
portions), and the regions within reach of abradihg and degrad- 
ing agencies were therefore of sufficient extent for the needed 
Paleozoic sediment-making. The sediments can, in many cases, 
be proved to have come from regions not far distant ; the succes- 
sion of mud-made rocks and those of beach or sand-flat origin, to 
have the relative positions of the beaches, sand flats and off 
shore deposits of a growing continent; and one example of this 
I shall present in the following number of this Journal. More- 
over, facts with regard to marine currents and wave-action, 
oceanic and sea-shore depositions, show that another continent m 
the Atlantic could have given no help had it existed. _J. D. D. 
2 ée Geology of Bermuda.—Professor Wm. N. E, of 
Middletown, Ct., has a valuable paper on this subject in Bulletin 
directions, excepting the southwest, the depth is from 1500 to 
2250 fathoms. : 
3. C...D. Walcott on the Deer Creek Coal-field in ae 
(Senate Doc., No. 20, 48th Congress, 2d Session).—Deer Cree: 
syte 
to the south. The northern boundary of the valley consists of 3 
belt of Carboniferous limestone 1200 feet thick; south of th 
eccur Cretaceous sandstone, clays and coal seams, nearly 3700 
feet in thickness, apparently conformable to the underlyin 
boniferous. ere 1s also a band of Devonian limestone. ~ ¢ 
ee and andesite outflows were subsequent to the erosio” e 
the valley. 
The sal beds are in sandstone referred to the Cretaceous ; two 
