272 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jan. 23, 



The next section is at Whitton Street, two and a half miles north- 

 west of Ipswich. In some fields to the westward of the high road 

 there are two pits, one of which exhibits the following section. (See 

 fig. 19.) 



Fig. 19. — Section near Ipswich. 



= «. Mixed clay and gravel. 



b. London clay; brown and occasionally light bluish-grey clay, 



with a few small ferruginous concretions, passing down into 

 slightly micaceous brown clay laminated with ochreous and 

 yellow sand. No fossils. 



c. Round flint pebbles — 1 to 10 inches in diameter — in ochreous 



sand and brown clay. Teeth of Lamna not uncommon. No 

 other fossils, 



Light ash-coloured sand, with a few small clayey concretions. 

 No fossils. 



The chalk is not here reached, but it crops out at a short distance 

 lower down the hill, and at a level of not exceeding thirty to forty feet 

 below stratum " c." There are some pits adjoining Ipswich near the 

 Woodbridge road which exhibit sections of the London clay over- 

 lying sands which I believe to belong to the lower Eocene series. I 

 have not examined these pits in detail. 



Passing on toWoodbridge, we arrive, at a distance of one mile south 

 from this town, and on the banks of the river, at the Kyson brick- 

 field, a spot well known by the circumstance of the teeth of the 

 Monkey having been found there*. The exact position of the bed in 

 which these remains occur has been considered rather problematical, 

 but I have little doubt that it belongs to the basement bed of the 

 London clayf . (See fig. 20.) 



Fig. 20. — Section at KysonX- 



b. London clay. Above this clay, and a little higher 

 on the slope of the hill, the red crag crops out. 



Round flint pebbles in yellow sand. Teeth of 

 LamncB common ; those of a species of Monkey 

 rare. This crops out on the level of the river. 



Light- coloured sands ; depth unknown. Large 

 Ostrece said to occur in some concretions in the 

 upper part of this bed. 



* Owen, Annals Nat. Hist. vol. iv. p. 191." 



t It has been already assigned by several geologists to the beds beneath the 

 London clay. 



t T cannot quite depend upon this section, as I have mislaid my original notes 

 of it. 



