4 8 



TABULATE CORALS. 



as the type of the species. Examples specifically inseparable 

 from this are, however, found in the Devonian of both the 

 Old and New Worlds ; so that the species had a very wide 



Fig. 14. A, A specimen of Favosites Gothlandica, Lam., from the Niagara Limestone (Wen- 

 lock) of Owen Sound, Ontario, of the natural size ; B, A small example of the same 

 species from the Wenlock Limestone of Dudley, with comparatively minute corallites, 

 of the natural size; c, Fragment of the same species, with large-sized corallites, from the 

 Wenlock Limestone of Gotland, of the natural size ; D, Part of two corallites of the 

 same species, from the Corniferous Limestone (Devonian) of Woodstock, Ontario, 

 slightly enlarged. 



range both in space and in time : and there are various other 

 Silurian and Devonian forms of Favosites which, as before said, 

 appear to be nothing more than variations of this type-form. 

 Having had the opportunity of making a careful examination, 

 microscopic and macroscopic, of a very extensive series of such 

 forms, collected from the Silurian and Devonian deposits of 

 both America and Europe, I shall in what follows briefly 

 record the results of my researches as bearing upon the 

 structural characters of the species. 



