flutings or grooves, and the curved form of my speci- 

 men are much easier expressed by the pencil than by 

 words. 



Cornua Ammonis are very common about this vil- 

 lage. As we were cutting an inclining path up the 

 Hanger, the labourers found them frequently on that 

 steep, just under the soil, in the chalk, and of a con- 



An old chalk pit. 



siderable size. In the lane above Well-head, in the 

 way to Emshot, they abound in the bank, in a dark- 

 ish sort of marl, and are usually very small and soft : 

 but in Clay's Pond, a little farther on, at the end of 

 the pit, where the soil is dug out for manure, I have 

 occasionally observed them of large dimensions, per- 

 haps fourteen or sixteen inches in diameter. But as 

 these did not consist of firm stone, but were formed 



lO 



