380 
valves of lamellibranchiate mollusca are of this species, while at 
March it is by far the most abundant shell. It is to-day on all 
our coasts one of our most abundant species. 
The great interest it has for geologists is, in my opinion, that it 
enables us, as does no other species, to separate most clearly the 
glacial deposits from those of crag age ; and among other points 
which have been the subject of discussion with Norfolk geologists, 
it plainly shows, as I take it, that those deposits of stratified clay, 
sand, and gravel, which underlie on the Norfolk coast the Cromer 
till, which Mr. Gunn has termed the Laminated beds, are totally 
distinct from the Chillesford clay, which Mr. Wood and I maintain 
to be the uppermost member of the crag series. 
It is worthy of note, that while the other common Tellins of the 
upper crag, viz., Tellina obliqua, T. lata , and T. prcetenuis, are 
enumerated as occurring in those deposits in Iceland which corres- 
pond with our English upper crag, no mention is made of the 
occurrence in those beds of Tellina balthica, nor is this species 
found in any portion of the crag of Belgium. 
II. 
A LIST OF PLANTS OBSERVED NEAE CEOMER IN THE 
MONTHS OF JULY, AUGUST, AND SEPTEMBER 
IN 1875 AND 1876. 
Communicated by 
Charles C. Babington, M.A., F.E.S., &c., &c., 
Professor of Botany in the University of Cambridge. 
Read 31 st July, 1877 . 
It has been intimated to mo, that a copy of my List of Plants 
noticed near Cromer would be acceptable to the Norfolk and 
Norwich Naturalists’ Society, I therefore send the following 
catalogue, in which the names are those used in the 7th edition of 
my 1 Manual of British Botany.’ The bounds of my district are 
