Quart. Journ. Geol. Soc. Vol. LXXIV, Pl. XVIII. 



1 x |6 





^ 



2. x 16 



3. x25 



H.H.T., Photomicro. 



Bcmrosc, Cello., Derby. 



ANHYDRITE and GYPSUM from COCKLAKES MINE (Cumberland). 



