148 Geological Society : — - 



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 palaeontological difficulty which the occurrence 

 of Hyperodapedon east of Ottermouth presented is now removed ; 

 (ii) the statement made in the last paragraph on p. 71 of the 

 author's paper in the February number of the Quarterly Journal 

 needs some modification ; (iii) 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 physio- 

 graphy of the country are indicated. 



3. " The Marls and Clays of the Maltese Islands." By John H. 

 Cooke, Esq., F.G.S. 



The following deposits (in ascending order) occur in the Maltese 

 Islands : — I. Limestone, II. Glohigenna-WmestoiLe, III. Clays, 

 TV. Greensands, Y. Upper Coralline Limestone. The Marls and 

 Clays forming the subject of this communication are Xo. III. of 

 this list. They lie conformably upon the Globigerina-limestoiie, 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 the greensands is sometimes, though 

 not always, complete, and occasionally the greensands are absent, 

 and the coralline limestone rests directly on the clay. The thick- 

 ness 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, 



December 7th.— W. H. Hudleston, Esq., M.A., F.R.S., 



President, in the Chair. 



The following communications were read : — 



1. " Xote on the Xufenen-stock (Lepontine Alps).'' By Prof. T. 

 G. Bonney, D.Sc, LL.D., F.R.S., Y.P.G.S. 



In 1889 the author was obliged to leave some work incomplete in 

 this rather out-of-the-way portion of the Lepontine Alps. In the 

 summer of 1891 he returned thither in company with Mr. J. Eccles, 

 F.G.8., and the present note is supplementary to the former paper. 

 The Nufenen -stock was traversed from north to south, and a return 

 section made roughly along the eastern bank of the Gries Glacier. 

 Gneiss abounds on the north side of the Xufenen Pass, followed by 

 rauchwacke and some Jurassic rock. On the flank of the mountain 

 are small outcrops of rauchwacke and of the so-called ' Disthene- 



