51 



Throughout these remarks, I have connected these remarkable 

 fossils with the Cycadean leaves, rather than with the Coniferous 



Zamia Gigas, as restored by Mr. Williamson. 



wood with which they are associated. Their very singular forms 

 seem to present little in common with Coniferse, whilst we can 

 easily conceive of similar appendages being added to the solitary 

 cones of the recent Cycadeoidese. It will, however, be evident 

 to the Society that very much remains to be accomplished before 

 these questions can be definitely settled ; and the investigation 

 of the problem, the exact nature of the Runswick vegetable 

 collars, and of the plants to which they were attached, may be 

 considered as most appropriately falling within the province of 

 the Yorkshire Philosophical Society. 



Manchester, May 1st, 1847. 



