The Corah of DelafAd. 193 



nature has herself classified this fauna, and even then we must 

 not expect to find divisions, but rather connected branches of one 

 central type. 



The small collection hastily gathered by an exploring party 

 from a little mound of debris must necessarily represent but a 

 small proportion of the life that really existed in the teeming seas 

 of that geological epoch. Amateur geologists have here a rich 

 field for original work, and may find unlimited opportunity for 

 study and investigation. 

 13 



