267 
some two miles inland, at an elevation of about 200 feet 
above the sea-level ; and more recently have had a specimen 
given to me, said to have been found in Cornwall, but I am 
somewhat dubious about the accuracy of this locality. I am 
under the impression that VermicuHte Granite will be found 
in Yorkshire, especially in the northern division of the West 
Riding; and I trust our geological friends will carefully 
examine any granite boulders they may meet with in their 
excursions. It is only when the Granite is decomposed that 
the mineral can be propei ly separated from it ; but even in 
situ, by careful observation, there will be no difficulty in 
detecting it. That these Granite boulders have travelled a 
long distance I am fully persuaded, and my belief is they 
have been transported to our shores in floating ice, very 
probably from Labrador. 
NOTES ON CARBONIFEROUS CEPHALOPODA. PART I. RECENT 
CEPHALOPODA. BY WILLIAM CASH, F.G.S. ( PLATE XI.) 
The true method of reasoning on natural objects and 
phenomena, is from that which is well known to that which 
is unknown ; hence it follows, that a sound knowledge of the 
structure and relations of Fossil Animals can only be acquired 
by a careful study of the structure and relations of their living 
analogues. These and similar considerations have resulted in 
prefacing the proposed Notes on Carboniferous Cepha- 
lopoda," with the following remarks on the structure, 
habits, distribution, and classification of their living repre- 
sentatives. 
The class Cephalopoda includes the most-highly organised 
members of the great Molluscan sub-kingdom. Its best known 
living types are the Argonaut, or Paper Nautilus, the Cuttle 
Fish, the Squid, and the Pearly Nautilus; whilst its extinct 
types include the Ammonite and the Belemnite, Fossils 
