138 ROYAL SOCIETY OF CANADA 



(6) Lastly, the distribution of eruptive rocks is such as to indicate 

 their correspondence with well-marked physical features of the present 

 surface, and no doubt shared in the determination of the latter. Passa- 

 maquoddy Bay, the Baie des Chaleurs, the great central basin and the 

 Bay of Fundy are all clearly outlined by the volcanic hills which border 

 them. 



