84 



FORAMINIFERA OF THE CRAG. 



Other common species are Textilaria sagiftnla, Truncatulina lobatula, T. Haidia- 

 gerli, and Botalia Beccarii. On the other hand, Nonioninse are rare and the 

 specimens small. There is also a remarkable absence of Milioline forms. 



3. SuDBOURNE Hall. — Zone d. 



I measured the following section in the pit directly in front of the Hall in 

 1886, and it is still (1894) in the same condition. 



Surface soil and drift 



1' 6" 



(Fine white Coralline Crag, full of comminuted shells and Bryozoa, rich in 

 Scaladiie . . . . . . . 3' 0" 

 , Marly Crag, buff-coloured and greenish at the base ; full of fine shells, 



Cardita senilis, Arctica Islandiea, Ghlamys opercularis, Astarte Omalii, 

 I &c. . . . . . . . 3' 6" 



This pit is referred, somewhat doubtfully, by Prof. Prestwich to the Zone d ; 

 but the Mollusca, especially the band with Arctica islandiea, in a greenish to buff- 

 coloured Crag, so distinctive of this zone at Broom Hill, Sutton, and elsewhere, 

 together with the Foraminifera, confirm this view. Some of the latter are here 

 very fine ; specimens of Pohjmorphina frondiformis 5 mm. long, and of P. 

 complanata 4 mm. long, being not uncommon. Polymorphina variata is also 

 plentiful and well grown, together with Textilaria agglutinans (varieties) and T. 

 trochus. 



4. Tattingstone (Park Farm). — Zone d. 



We are indebted to Prof. Prestwich for some material from the outlier of 

 Coralline Crag which occurs at this locality, four and a half miles south-south- 

 west of Ipswich. The section is now much obscured and overgrown ; but 

 originally about eight feet of Coralline Crag was exposed, underlying Red 

 Crag, in the following section :^ 



1. Coarse gravel. Drift. 



2. Ochreous sand, with seams of ironstone, <&c 



3. Crag with a few coprolites 



4. Light-coloured sand . 



5. White sand . 



6. Brown loam 

 .7. Not described 

 8. Coralline Crag 



Eed Crag 



y 12' 0" 



8' 0" 



The Coralline Crag of this section is referred, with doubt, by Prof. Prestwich 

 to his zone d ; but an examination of the Foraminifera shows a somewhat 



1 Prof. Prestwich, ' Quart. Journ. Geol. Soc.,' vol. xxvii, 1871, p. 342. See also, for other 

 sectiona at Tattingstone, " Geology of Ipswich," <fcc., ' Mem. G-eol. Surv.,' 1885, pp. 26 and 47. 



