742 PROF. J. BUCKMAN ON THE MIDFORD SANDS. 
than the difference of the sands at Midford compared with the 
admitted oolites of Ham Hill and Doulting. 
Tf we look to the fossils of this part of our Oolite series we shall 
find the subject beset with many difficulties, the chief being that 
where the rock is hard, as at Ham Hill, it is absolutely made up of 
a mass of comminuted shells cemented by an oolitic matrix, so that 
great industry, patience, and knowledge of fossils is required to get 
them and to make them out. They are, however, both in texture 
and even in colour at Doulting, like the “shelly oolite” of Brodie, 
and certainly contain many of the fossils of that member of the 
Cotteswold series. 
Another difficulty as regards the making out of the fossils arises 
from the fact that as this sand bed has been correlated with Lias, so 
many of the shells are considered as indicating Lias. It is also 
true, as regards the Jurassic of the west, that several Lias forms do 
actually occur in the true Oolitic deposits, thus mounting higher 
than they do in the Cotteswolds; on the other hand, what we have 
hitherto taken as positively indicative of high Oolitic rocks are 
found here in the sands,—facts which will be seen from the list we 
now append to this paper. 
The following, then, is offered as an imperfect list of the fossils 
from the sand (so-called Midford) of Dorset and Somerset ; it must, 
however, be understood that if they could be made out there are 
probably very many more species than we have been enabled to 
determine. 
Lust of Fossils from the Sands of Dorset and their equivalents. 
Pentacrinus, ossicula of, frequent. 
Apiocrinus Parkinsoni, Brown and others. I have a series of ossicula from the 
sands, and also a body from the Dorset Ammonite-bed, Bradford Abbas. 
EcuinopErms. Plates and spines of various species occur in the sands, also in 
the stones at Ham and Doulting. 
Serpula socialis occurs frequently on the surfaces of the blocks of oolite and on 
the harder beds which occur in the sand. : 
Crustacua, claws and portions of. 
Belemnites quadricanaliculatus, Quenstedt. 
tricanaliculatus, Quenstedt, probably the same species. These are common 
in the sand bank. 
irregularis, | Occur on the blocks of stone occurring in the sands, Brad- 
subtenuis, 
compressus. ford Abbas. 
Nautilus intermedius, 
latidorsatus, Rarely in the blocks of stone in the sands. 
excavatus, 
inornatus, 
Ammonites jurensis. Common to the sands and the Ammonite-bed. 
Moorei, 
— _ Germain, From the sands at Coker. A. Moorei is common. 
Aigion. 
GasrEropopA. So rare that we cannot be said to have made out a single species*. 
* Since the above was written we have broken up a block of stone in the sand 
at Bradford containing bits of at least two Ammonites and three species of 
Univalves. 
