A. Vaughan Jennings — Geology of Bad Nauheim. 365 



(d) "With regard, lastly, to the agency of the hasaltic eruptions, 

 the considerations involved have been already referred to, and my 

 own observations have been too limited to permit of a definite 

 opinion. A superficial study of the country would lead one to the 



conclusion that the basaltic masses had been consolidated before 

 the Oligocene seas or lakes deposited sediments round their bases, 

 and that they formed islands in the waters of Middle Tertiary times. 

 There is, however, I understand, evidence elsewhere for the 

 Miocene age ^ of the eruptions, and of a still later date for part of 

 1 See note on p. 355. 



