[INERALS AN] 



The annexed figures shew some of our more common or 

 teristic forms : 



FIG. 128. 

 Graptolithus (Didymograptus) flexilis : Hall. 



FIG. 129. 

 G. (Loganograptus) Logani : Hall. 



FIG. 130. 

 G. (Didymograptus) pennatulus: Hall. 



FIG. 131. 



G. (Dicranograptus) ramosus : Hall. 



FIG. 132. 

 G. (Climacograptus) bicornis : Hall. 



FIG. 132.* 



G. ( Diplograptus) pristis . Hisinger. 



FIG. 133. 

 G. (Phyllograptus) typus : Hall. 



