318 Scientific Intelligence. 
are vast results — elevations and snbsidences — accom- 
plished by lateral pressure. Now, that elevation of the land over 
the higher latitudes which brought on the Glacial era, is a natural 
result of the same agency, and a natural, and a most a neces 
been then in progress. The accumulating, folding, solidification 
and Sut geapee cage of rocks attending all the Sapa grad and 
mountain-making through the Paleozoic, Mesozoic and Cenozoic 
eras, had greatly stiffened the crust in these parts, pa hence, in 
after time, the continental pyc resulting from the lateral 
r the 
the continent, where the nt Oi pa and other changes had 
been relatively small. ‘lo the subsidence which followed the ele- 
and oceanic areas then going forward must have had a grea 
preponderating cause in the oscillating agency of all ise inter 
pressure within the crust. 
7. Age of the Lignitie Coal Formation of A ancouver bc A 
Letter to the editors, from Alfred R. ©. Selwyn, F.R.S., Director of 
the ee oleien Survey of Canada, dated March 3d.—I wish to 
recor is : 
logical and Geographical Survey of Colorado, 1873, to the effect 
that the coal of Nanaimo, Vancouver Island, is referable to the 
lower American Eocene. 
oe surveys have now been made by the Canadian Geological 
Surve the Nanaimo coal basin, and it is proved beyond the 
porsibility of a doubt that the coal beds there are overlaid by a 
others. 
Maps aap ‘Rections showing the relative position of these beds 
and of the coal seams are given in the Report of the Geological 
8. Note on the genus Op istho yptera eae. ya and Anomalo- 
donta Gnen, 1874, (Communicated )—Mr. A.M seta in a reply 
to my note on the above mentioned ge ae published in the 
Sitanber Seater (1874) of the  Caemnat Journal of Sadan: 
endeavors to defend his substitution of the name Anomalodonia 
for Meek’s earlier name. bs he does on the ground (1) that 
Megaptera, having been previously used for a genus of whales, 
could not stand; (2) that sidinagh Mr. Meek had P oceiasite 
*The facts are briefly mentioned from the Canada Geological Report for 
1972-1813 in vol. vil of f this een pp. 517, 518, 1874.—Ebs. 
+ See this Journal, viii, 218, 
