198 Mrs. McKenny Hughes—Pleistocene Mollusca. 
diggings, however, on the north-east side of the village, this deposit 
was exposed and described by the Rev. O. Fisher,’ and referred to in 
the Survey Memoir.’ 
About a mile and a quarter W.S.W. of these pits, north of the 
Windmill, on the other side of Barrington Green, extensive excava- 
tions for phosphate have recently exposed other sections in what is 
the continuation of that terrace, or if now cut off from it by the 
little valley west of Barrington Green, was originally part of the 
same. 
From the character of the workings, the whole of the deposits 
belonging to the gravel age can be seen down to the base, where 
they rest upon the Chalk-marl (see Section Fig. 5). They consist 
largely of materials derived from the Chalk-marl and from the 
Boulder-clay, which at that time must have covered a much wider 
area than now on the adjoining hills. A somewhat larger admixture 
of far-travelled fragments from the drift might be expected, and as a 
matter of fact is generally found, in all gravel deposits of the district 
which occur on higher and older terraces, or nearer the hills. 
The portions of the Barrington Gravel, which are of the same 
coarseness as that of Barnwell, do not differ much from it in com- 
position ; in both cases a large proportion of the material consists of 
ferruginous subangular flints. 
The Barrington deposit is exceptionally rich in the number and 
variety of its Mammalian remains. Small pieces of bone occur 
through the whole, but the largest and best-preserved bones lie in 
irregular masses of gravel near the base. In one place just above 
the Chalk-marl there was a boulder of quartzite about 9 inches in 
diameter resting upon a large limb bone. The bones are generally 
scattered and mixed, but occasionally there seems to be evidence of 
associated remains. Among the valuable specimens secured by Mr. 
Keeping’s skill for the Woodwardian Museum, there are several 
whole lower jaws of Hippopotamus and a nearly perfect skull of 
Hyena. It will be seen on comparing the lists of fossils given below 
(p. 202), that the Mammalian remains from this pit at Barrington 
(Column IV.) agree with those from Barnwell Abbey (Column I.), 
with the exception of Arvicola, determined by Mr. Oldfield Thomas, 
which has not been found at Barrington, and of Reindeer, the occur- 
rence of which at Barnwell rests on the determination of a small 
fragment of antler. Horse occurs in all four localities. 
Bison priscus, Cervus megaceros, C. tarandus, Hippopotamus 
amphibius (major), Rhinoceros leptorhinus, and Meles taxus, have not 
been found at Grantchester, but these diggings were unfortunately 
not so carefully watched as they might have been. Bones have been 
obtained from the pit near Barnwell Station, but they have, gene- 
rally, been too fragmentary for determination. The following species 
have, however, been made out, Red Deer, Mammoth, Rhinoceros and 
Horse. 
At Barrington the shells occurred in rapidly thinning and thicken- 
1 Q.J.G.S. vol. xxxv. 1879, p. 670. 2 pp. 94-5, 
