THE HAMILTON ASSOCIATION. 13I 



figured by Dana, appears to be unusually large also, if the natural 

 size is correctly given. 



The Petrasfer, from the Niagara shale, described by Mr. 

 Billings in the Proceedings of the Canadian Geological Survey, was 

 found at Stoney Creek (not Grimsby), by my friend Johnson Pettit. 

 A Cyclocystoides I discovered at Anticosti is in the Redpath 

 Museum. It is not definitely settled as to whether it belongs to the 

 Asteroidea or Cystideans. 



