APPENDIX. 51 



" In the neighbourhood of Halifax, at South Owram, it is 150 feet thick ; thence 

 it tops the hills at North Owram, and at Queensbury and Clayton is still thicker. 

 It is divided by a bed of shale at these places ; the best sandstone and flags are at 

 the bottom, 160 to 180 feet thick, then 35 feet of shale, and above the shale about 

 30 feet of flags, sometimes poor and raggy. 



" The trees at Clayton are from the shale and rag above the lower flagstone, 

 which in this quarry is worked to a depth of 80 to 100 feet." 



I may only add in conclusion that the magnificent fossil described in the above 

 pages is now at the Owens College at Manchester, in the Museum of which institu- 

 tion it will shortly be mounted in a manner worthy of its perfection. 1 



1 In addition to the above specimens no less tban seven similar examples, though of smaller size, 

 have been discovered in excavating for the foundations of some buildings in Darley Street, Bradford. 

 Though of smaller size, these new specimens, so far as they have been uncovered, lead to the same 

 conclusions as those enunciated in the precediDg pages. 



