570 
Transactions of the Society. 
Zone XI. 55 ft. from the top of the Gault. A pale-grey 
marly clay, somewhat tenacious. The residuum after washing, 5 per 
cent, of greenish-grey sandy material, with numerous prisms of 
Inoceramus. The ForamiDifera are not very common, and rather small ; 
Ostracoda are frequent. The fine washings contain prisms of Ino- 
ceramus, glauconite, angular grains of quartz, rather scarce, granular 
casts of Anomalina, and the following Foraminifera : — Textularia 
pygmsea Rss., frequent; Ramulina glotmlifera Brady, rare; Globi- 
gerina cretacea d’Orb., very common ; and Anomalina ammonoides 
Rss sp., very common. 
Zone XL 50 ft. from the top of the Gault. A tenacious 
marly clay, of a pale-grey colour, containing 40*69 per cent, of 
CaC0 3 . A residuum after washing, 1J per cent, of grey shelly 
material, with many brown cylindrical stem-like casts ? Foraminifera 
are common ; Bulimines very common. Ostracoda are fairly common. 
The fine washings consist largely of Globigerina and other Forami- 
nifera. There are also some shell fragments, a very few prisms of 
Inoceramus, a few granular casts of Anomalina, angular grains of 
quartz (extremely rare), and glauconite (rare). The following 
F oraminifera also occur in the fine washings : — Miliolina venusta 
Karrer sp., frequent ; Textularia pygmsea Rss., frequent ; Bolivina 
textularioides Rss., frequent ; Nodosaria sp., one specimen ; Dtntalina 
catenula Rss., one specimen ; Dentalina communis d’Orb., frequent ; 
Globigerina cretacea d’Orb., very abundant ; and Anomalina ammo- 
noides Rss. sp., very common. 
Zone XL 45 ft. from the top of the Gault. A pale-grey 
marly clay. The residuum after washing, 3 per cent., consists of fine 
sandy material with some spines of Pseudodiadema. Microzoa are 
very abundant; Globigerinae are excesssively abundant in the fine 
washings. The fine washings contain shell fragments, granular casts 
of Anomalina in abundance, many Inoceramus prisms, some scattered 
grains of glauconite, and very few angular grains of quartz, also the 
following Foraminifera : — Nubecularia nodulosa sp. n., one specimen; 
Miliolina venusta Karrer sp., frequent ; Textularia pygmsea Rss., 
common ; Bolivina textularioides Rss., common ; Lagena apiculata 
Rss., one specimen ; Lingulina semiornata Rss., one specimen ; 
Ramulina aculeata d’Orb. sp., frequent ; Globigerina cretacea d’Orb., 
extremely abundant ; Spirillina vivipara Ehrenb., one specimen ; 
and Anomalina ammonoides Rss. sp., very common. 
Zone XL 40 ft. from the top of the Gault. A pale-grey marly 
clay. The residuum after washing, 1 per cent, of sandy material with 
brown stem-like fragments. Microzoa are common. During disin- 
tegration by washing, this clay shows a tendency to separate into 
distinct laminae, possibly due to intervals of rest during deposition. 
The Globigerinae are not so abundant as in the last two samples. 
The fine washings contain shell fragments, and the parasitic borings 
in those of this bed are very well developed and abundant. There 
