DISCOVERT OF STIGMAEIA FTCOIDES AT CLAYTON, TOKKSHIRE. 



375 



29, Notes on a Recent Discoyert of Stigmaria ficoides at Clayton, 

 Yorkshire. By Samuel A. Adamson, F.G.S. (Read April 25, 



1888.) 



The extensive quarries of Messrs. Murgatroyd and Sons, at Eall Top, 

 Clayton, near Bradford, Yorkshire, are now justly celebrated, not 

 only for the excellence of the stone worked there, hut also for the dis- 

 covery of the tinest and most fully developed examples of Stigmaria 

 ficoides yet seen. The bed of stone, which is so famous throughout the 



Oround-pl<in of roots of Stigmaria ficoides discovered at Clayton, 

 near Bradford, in November 1887. (Scale about y^y.) 



