T1{E GEOLOGIST. 
Vidon'mnh, Canliim EheeticKin, and Avicida conlofta arc the chief molluscan 
fossils of this zone. 
The next group of strata are those with Ammointes Phimrbis and Am. John- 
stoiii. Some of the foregoing sections expose tliese beds, such as those at 
Uphill and Wilnicote ; but they can be still better studied at Street in Somer- 
setsliire, where they have viel'ded so many Ihie Eualiosaurian fossils. These 
beds are also well exposed at Brockeridge and Delford in the Vale of Glou- 
cester, and at Biuton in Warwickshire. 
Imsti-tea Miirchl.soiire occurs in this zone, and Odrca Liamca is very charac- 
teristic of some of its lower beds. Iclit/ti/o.sciuri and PleMOsauri, of several 
species are found in this series ; the latter chiefly in the lower part. Of tlie 
two known specimens of the PI. mec/acephalics, one was found in these beds near 
Street, Somerset, and the other at WUmcote, Warwickshire. 
The Ammonites Backlaiidi characterizes tiie next higiier group of strata, 
which are also known as the Lima-beds. These are well seen at Ljme Regis, 
at the Church Clift', and from the Broad Ledge to the shore, and yield several 
species of IMIiuosaia-i'K, also Am. Conybeari, A. rofiformis, A. cmgidatus, A. 
Greenoiif/hii, and A. tortilis. 
The Am. Turrifri beds are next, and can also be studied at Lyme Regis ; 
they have yielded three species of IcMhyosauruis. Am. semicostatus and A. 
Bonnanli belong to this zone. 
The Am. obtusiit beds succeed, between the Broad Ledge at Lyme and 
Cornstone Ledge near Charmouth ; they apparently have no saurian fossils. 
A. Brooki, A. stellaria, A. idanicosta, and A. Diidressieri accompany A. oblmus. 
The next zone is that of the Am. oxynotus, with A. bifer and A. lacumtus. 
The beds with Am. rancodatus comprise, in ascending order, the Ammonite- 
bed, the Hippopodium-bcd, the coral-band, aud the Gryphoea-bed. Tliis zone 
is well seen near Cheltenham, at Ljme, and at Robin's Hood Bay in Yorkshire. 
Am. armatus, A. iiodiilosus, and A. G-uibalianus belong to the A.raricodus beds. 
Dr. Wright then pointed out that the Avic.ula coutovta beds. Like the Kossen 
beds, contam a fauna special to themselves, and might as well be classed with 
the Ti-ias as with the Lias. They have a wide range in the South of England, 
South Wales, the Midland Counties, and the North of Ireland. After some 
remarks on the more important features of the several Ammonite-zones of the 
Lower Lias, the author concluded by remarking that as Quenstedt and Oppel 
had observed, the Middle Lias could be similarly subdivided by means of the 
Ammonites peculiar to its several stages. 
Liverpool Geological Societi', March 13, 1860. — Thomas Urquhart., 
Esq., in the Chair. 
The Secretary, G. H. Morton, Esq., E.G.S., exhibited a number of scratched 
boulders, and shells of several species collected by him from the boulder-clay of 
the district. He showed how tiie boulders were connected with the grooved 
and striated surfaces of the sandstone in the neighbourhood. 
Thomas I. Moore, Esq., of the Derby Museum, exhibited Cetacean remains 
from more recent local deposits. 
The Rev. Henry H. Higgins brought forward his proposal for the arrange- 
ment of the recent and fossil species, in the new Liverpool museum, in natural 
liistory series, without regard to stratigra[)hical formations. The Secretary, 
Ur. Collingwood, and most of the members of the society, advised a geological 
arrangement of the fossils. It was suggested that the Society should enrich 
the valuable geological collection of the Royal Institution, which, with some 
small additions, would ass\nne considerable importance. 
