An Excursion to the Crag District. 41 



Orford, is now turned south, and runs between the old beach 

 and the new bank for ten miles before it finds an outlet to 

 the sea.* (See Map.) 



At other parts of the coast, as at Dulwich, the sea is 

 gaining on the land, and this alternate encroachment and 

 retiring may be seen slowly going on at intervals along the 

 whole eastern and south-eastern coast, and serves to explain 

 by analogy many of the changes in coast-lines which have 

 taken place far back in past ages, the record of which was not 

 kept by man. 



As we could not get " Jumbo," we persuaded the landlord 

 to accompauy us to the pit in the park where the same great 

 beds of Cyprina Islandica and Terebratula grandis, which we 

 had observed at Sutton the day before, were again visible. 

 All the best shells were however too brittle (owing to the wet 

 state of the soil) to be obtained entire, so that we got very 

 few rarities. 



After dinner " Jumbo" presented himself, and said he had 

 some Crag-shells for sale. We condescended to receive his 

 overtures, and bought 10s. worth of him, which made up a 

 pretty complete series, and the whole afternoon was occupied 

 in packing them for London. 



The weather had now taken such an unfavourable 

 turn that we decided to forego the examination of the 

 Mammaliferous Crag at Chillesford, and many other Red 

 and Coralline Crag-pits around Orford, where good speci- 

 mens can be obtained, or interesting sections of the Crag 

 seen. 



Although Aldborough may be preferred as offering superior 

 marine attractions to Orford, I am persuaded the latter place 

 affords the best "Head-quarters" to anyone who desires to 

 have a pleasant holiday in the country, and collect Crag fossils 

 at the same time.t 



* The beach at Felixstow is travelling south in like manner, seriously im- 

 peding the navigation at the mouth of the Orwell, near Harwich, and creating 

 the greatest anxiety for tbe port of Ipswich. 



f Ifor figures and descriptions of the Crag fossils, see Mr. S. V. Wood's- 

 Monograph on the Shells, 2 vols. 1848-56 ; Mr. Busk's Monograph on the 

 Polyzoa, 1859 ; Mr. Darwin on the Cirripedia, 1851, in the Transactions of the 

 Palseontographical Society. 



