126 JOURNAL AND PROCEEDINGS 



work that covers a number of years, I am afraid that it cannot be 

 obtained separate from the other volumes. 



There is no doubt but that we shell soon be able to place these 

 forms in their proper order, and get a more correct idea of their 

 mode of growth and reproduction. I do not myself feel competent 

 to go extensively into this subject, which has puzzled so many wiser 

 heads. I will now close these remarks, so that we may have an op- 

 portunity to discuss the following specimens I have here from the 



NIAGARA FORMATION. 



Stromatopora, concentrica, Goldfuss. 



Coenostroma, constellatum, Hall. 



Dictyostroma, undulatum, Nicholson. 



Coenostroma, botryoideum, Spencer. 



" restigouchense, " 



" antiquum, Nicholson. 



" constellatum. Hall. 



I not named. 



1 Concentrica inclosing coenostroma antiquum. 



CLINTON FORMATION. 



Stromatopora, concentrica, Goldfuss. 



Caunopora, Walkerii, Spencer. 



GUELPH FORMATION. 



Coenostroma, Galtense, Nicholson. 



Stromatopora ostiotata, " 



" mammillata, " 



" substriatella, " 



2 others, not named. 



DEVONIAN FORMATION. 



Coenostroma, densum, Nicholson. 



Stromatopora substriatella, " 



" granulata, " 



" nodulata, " 



" punctulata, " 



" tuberculata, " 

 2 forms unnamed. 



