28 
CORALLINE CRAG. 
feet of Coralline Crag iindeiijing the Red Crag. Only about 
eight feet could, however, be seen in 1886. The beds belong to 
the upper division with casts of shells, but the only section being in 
the middle of the pit, where the newer deposits have been entirely 
removed, the junction with the Red Crag cannot at present be 
examined. Mr. Dalton speaks of the beds near Redland’s Covert 
as consisting of firm stony Crag, a mass of shells and casts, false- 
bedded at top and bottom, but not in the intermediate beds. 
Among the shells Mytili largely predominate, forming here and 
there the entire mass of considerable slabs. Near the top are 
concretionary masses, and a few Bryozoa. Bands of tufa occupy 
crevices and bedding-planes of open texture. Other sectipns of 
Coralline Crag will be found at Calton Farm, and at a Crag 
Pit ” (marked on the map) half a mile to the west. The latter 
shows 10 feet of false-bedded rubbly limestone full of Bryozoa and 
broken Echinoderms. 
The rock-bed is, or has been, quarried at several points along 
the base of the Red Crag to the east-north-east of Sudbourn 
Church; the sections are of no great interest, but the exact 
position of each will be found indicated on the maps of the Geo¬ 
logical Survey. At the cross-roads, four-fifths of a mile north- 
north-east of Sudbourn Church, is a large pit showing twenty 
feet of false-bedded buff Bryozoan sand or soft limestone. Whole 
shells are rare in this pit, and in the upper part of the section 
they are only found in the state of casts. The pit close to 
Sudbourn Church (on the west side) shows a very good section 
of soft Bryozoan limestone, with Fascicularia near the top. 
Following next the road from Sudbourn Church to the Hall, 
a large pit will be found, exactly opposite the Park gates, in the 
angle of the roads to Chillesford and Snape. It is now not often 
worked, but shows extensive vertical faces of soft rock on which 
perfect Bryozoa weather out. Pecten opercularis is an abundant 
shell here; other mollusca are not plentiful. While examining 
this section, I found a piece of drift-wood—too much decayed for 
microscopic examination—and a large splinter of mammalian 
bone, probably Cetacean. 
In Sudbourn Park old overgrown pits will be seen on each 
side of the road to the Hall. Several of these have been 
described by previous writers, but as the sections are not now 
visible, and they did not show anything exceptional, it is needless 
to repeat the details. One pit in the Park is still open, the Crag 
Pit,’' marked on the map, on the low ground north-west of the 
Hall. This is a large shallow pit in loose calcareous sand or 
marl, which is still extensively dug for making paths. Unlike 
the beds met with further north, the sand is full of well-preserved 
mollusca. Large and perfect specimens of Cardita senilis and 
Cyprina islandica, often with the valves united, are abundant, and 
many fine specimens of Terehratula grandis have been found, 
though this last species is nowhere plentiful. A box of the sand 
was taken by me to London for more minute ex;amination, but 
the results were somewhat disappointing, for the minuter forms 
