282 



OUR COMMON BRITISH FOSSILS, 



series) which takes the name of that ancient and 

 picturesque city. The places where the crag-pits are 

 usually richest in fossil shells are on the heaths and 

 commons so numerous in Suffolk and elsewhere, 

 for the crags produce what the farmers call very 

 "hungry land," and such unprofitable areas have 

 therefore remained longer in their wild state than 

 would have been the case had the soil been fertile. 



Fig. 2'jo.—PurJ>ura lapillus (Crag 

 and recent). 



Fig. 271. — Bucchmm widnlaUun (Crag 

 beds and recent). 



But these heaths are glorious places in the early 

 summer-time, when the sky is full of lark music, and 

 the gorse and broom bushes are ablaze with aromatic 

 yellow blossom, and the delicate crosiers of the 

 bracken fern are everywhere bursting from the ground. 

 Then, again, I know of no formation which more 

 impresses the young student with the full meaning 

 and significance of fossils than the Crag. Here 



