THE DEVONIAN AGE. 



85 



belonged to a similar area in the north-west of 

 Europe, in which shallow water and land conditions 

 prevailed during the whole of the Devonian, and 

 which was perhaps connected with the corresponding 

 region in Eastern America by a North Atlantic archi- 

 pelago, now submerged. This whole subject is so 

 important to the knowledge of the Devonian, and of 

 geology in general, that I may be pardoned for 

 introducing it here in a tabular form, taking the 

 European series from Etheridge's excellent and 

 exhaustive paper in the "Journal of the Geological 

 Society.'' 



DEVONIAN OR BRIAN. 



