Ixiv 
PROCEEDINGS OF THE 
With the exception of the moss, all, he said, occurred in other parts 
of Bedfordshire, Mr. C. Crouch having found Pinguicula vulga/ris on 
Markham Hills, hut Hypnum Sendtneri must now, he feared, he 
relegated to the list of extinct Bedfordshire plants. As might be 
expected this field was also the habitat of numerous Mollusca, 
which had likewise been exterminated, their destruction being 
specially noticeable after the first ploughing of the field, as in 
places the surface was whitened with their dead shells. Amongst 
them the following species had been collected by his son, Edgar 
Saunders:— Succinea putris, 8. elegans, Helix nemoralis, JP. horten- 
sis , IT. arbustorum , var. rupestris , IT. hispida , H. sericea , II. rotundata, 
Pupa umbilicata , and Vertigo pygmcea. The despoiling of so rich 
a locality for both plants and animals was, he said, much to be 
regretted, and it was the melancholy duty of observers to note the 
extinction of native species in this area and also the introduction of 
foreign ones. 
The Totternhoe quarries were then visited, and Mr. Saunders 
pointed out the Totternhoe Stone in situ in the only spot where it 
is exposed in this neighbourhood. Erom it he has collected the 
following fossils:— 
Crustacea. 
Paleega Carteri. 
Mollusca. 
Belemnites, sp ? [near plena). 
Nautilus elegans. 
,, atlas. 
Turrilites Mantelli. 
Dentalium (cast). 
Bhynchonella gratiana. 
,, Mantelliana. 
Terebratula semiglobosa. 
Plicatula pectenoides. 
Pecten fissicosta. 
,, Beaveri. 
,, orbicularis. 
Pisces. 
Cimolichtbys striatus. 
Otodus appendiculatus. 
Eeptilia. 
Ichthyosaurus campylodon. 
Many birds were in full song, nightingales especially, and some 
of the party, from Lincolnshire, beyond the northern limit of these 
birds, heard them for the first time. Prof. Plowright found on 
the locally-abundant Carum bulbocastanum an JEcidium which he 
had not previously met with. The weather was agreeable, and the 
meeting a very successful one. 
Eield Meeting, 23rd May, 1891. 
WELWYN, AYOT, AND WHEATHAMPSTEAD. 
The members assembled at Welwyn Station, and, under the 
direction of Dr. Morison and Mr. A. C. G. Cameron, descended the 
hill to the Hertford road and entered the Tewin Water gravel-pit. 
Here Mr. Cameron pointed out that this gravel, which lies upon 
the Chalk in the valleys of the Beane, the Mimram, and the Lea, 
is of Mid-Glacial age, and was most probably deposited by the 
retreating waters of a glacial sea. There was much of it, he said, 
in this district, and it was generally of considerable thickness. It 
covered large areas around Hitchin and Stevenage, and there were 
great expanses of it at Hertford, Hatfield, and on towards Watford. 
