Geological Society of London. 45 
accepted the breccia which is clearly marked on the left bank of the 
Sid at Sidmouth as the base of the Keuper, but he had not then 
satisfactory data for determining a similar basement-line in the 
country between the valleys of the Sid and Otter, where the Keuper 
is repeated by the great Chit-rock Fault. Since then he has received 
information from the Rev. Dr. Dixon of Aylesbeare, mentioning the 
occurrence of breccia at several points on the east side of the Otter, 
and has subsequently visited the district, and with Dr. Dixon traced 
the breccia (the true base of the Keuper) along the left bank of the 
Otter, which for many miles seems to mark the western limit of the 
Keuper in Devonshire. 
As results, (i) the paleontological difficulty which the occurrence 
of Hyperodapedon east of Ottermouth presented is now removed ; 
(ii) the statement made in the last paragraph on page 71 of the 
author’s paper in the February number of the Quarterly Journal 
needs some modification; (ii1) the geological maps of the Devon 
area require considerable revision; (iv) data are furnished which 
enable us to estimate the thickness of the Upper Bunter at not more 
than about 100 feet; and (v) points of interest in the physiography 
of the country are indicated. 
3. “The Marls and Clays of the Maltese Islands.” By John H. 
Cooke, Hsq., F.G.S. 
The following deposits (in ascending order) occur in the Maltese 
Islands :—I. Limestone ; Pies al Globigerina- limestone; III. Clays; 
IV. Greensands; V. Upper Coralline Limestone. The Marls and 
Clays forming the subject of this communication are No. III. of 
this list. They lie conformably upon the Globigerina-limestone, and 
so obscure is the line of demarcation between the two, and so striking 
the similarity of their fossils, that the clay may be considered as an 
argillaceous division of the formation upon which it rests. The 
upper part of the Globigerina-limestone is referred to the Horner- 
schichten of the Vienna basin, and the Clay to the Schlier. The 
separation between the clay and greensands is sometimes, though 
not always, complete, and occasionally the greensands are absent, 
and the coralline limestone rests directly on the clay. The thickness 
assigned to the clay by Dr. Murray (20 feet) is probably not far 
wide of the mark. A description of the lithological characters of the 
deposits of the clay division, based on microscopic evidence, is given. 
They consist largely of tests of foraminifera and minute fragments 
of minerals, and contain nodules of ochreous clay. A list of fossils 
of the clays is appended, including an addition of 31 species of 
Foraminifera to the 122 contained in Dr. Murray’s list. 
_ II.—December 7th, 1892.—W. H. Hudleston, Esq., M.A., F.R.S., 
President, in the Chair. 
The President announced that the American Philosophical Society 
will celebrate the one hundred and fiftieth anniversary of its founda- 
tion at Philadelphia, from May 22nd to May 26th, 1893. Fellows 
of the Geological Society who propose to be in Philadelphia during 
that week, and who may wish to participate in the celebration as 
