Journ. Geoi Soc. Vol. LVI, PL VI. 



y and greenish-grey mudstones and flags, with Climacograptus 

 hoceras sp., etc. 



— __— ^ -3_-^.ard blue mudstones with Monograptus convohitvs, M. cre- 

 .-— z^. ^—"^rjicoli, HI. lobiferus, Diplograptus belhdus, etc. 



— ^ —_j^_ n_^_-grey and greenish-grey mudstones and flags, with occasional 

 ~_ _- — . ZZ:--=J'bonate of lime. 



-~=ptolheca, M. Nicoli, M. lobiferus, M. gregarius, Rastrites pere- 

 =*■ ■ ■ ■ ts- icograptus undulatus, etc. 

 sr .. . ■ < . ■ ^-?ptotheca, M '. fimbriates , M. gregarius, Diplograptus ma gnus, 

 'us rectangularis, CI. undulatus, etc. 



==— • -=»-^. ^iangulatus, Diplograptus sinuatus, etc. 



■"-. . - =ed, blue shalesand grey flags with Monograptus fimbriatus, etc. 



=-. . ■ -= — < - • =>ous concretions. 

 . • ■ .=^=mestone. 



calcareous, nodular, hard, grey, sandy flags and grey shales, 

 ptus cgphus, Climacographis rectangularis, etc., and a band 



ng, shivery, blue-and-grey shales, with sandy grey flags, 



-*-*- L «J tenuis, Climacograptus rectangularis, etc. 



— — ^idbanded grey-and-blue flags and flaggy shales, with Diplo- 

 — ' slus, D. longissimus, Climacograptus rectangularis, CI. nor- 



S and shivery shales, with occasional bands of rottenstoneand 

 nded grits. Diplograptus modesius, etc. 

 uminaius,_Climatogriptus parvulus, and CI. normalis. 



edded, micaceous dark-blue flags and slates, with inter- 

 eds. 



greenish-grey giits, with occasional bands of slate yielding 

 is normalis and \arieties. 



