VOL. XIV.(2) THE PRESIDENT’S ADDRESS 79 
large river which drained north-west England, and that the 
restricted area of the deposit is against submergence. 
After luncheon at the White Hart Hotel, the landlord 
exhibited a fine collection of worked flints and various 
antiquities. The return journey was made vza Bourton- 
on-the-Hill, at which locality a large quarry in the Pea-grit 
series—which is here non-pisolitic—was visited. The 
stone is of a brown colour and has been utilised for the 
new Bank at Cirencester. From these beds the late Mr 
Slatter obtained Zervebratula plicata and Ter. submaxillata. 
Mr Buckman pointed out that to the west the Upper 
T7vigonia-grit rested upon the Notgrove Freestone, whilst 
to the south-east it rested upon the lower beds down to 
the Upper Lias. These facts support the conclusion so 
admirably demonstrated by our Honorary Secretary,’ that 
before the Upper 77zgonza-grit was deposited, the under- 
lying sub-divisions had been thrown into a series of slight 
anticlines and synclines, and a_ pene-contemporaneous 
erosion had produced a “ non-sequence.” Mr Buckman has 
introduced this term’ as preferable, for these cases, to an 
“unconformity,” since the latter is applicable rather to the 
marked discordance such as exists between the ‘“‘ Dolomitic 
Conglomerate” and the Carboniferous Limestone in the 
Bridge Valley Road section at Clifton, whereas in order 
to discover a non-sequence it is necessary to trace the 
strata over a considerable area before the discordance 
becomes apparent. 
Stow Station was reached about 5 p.m., and this con- 
cluded an interesting and enjoyable day. 
The third Field Meeting, kindly arranged by Dr 
Callaway, was held on July 15th, at Cheddar, which 
was reached about mid-day. Lunch was served at the 
Cliff Hotel, and afterwards a visit was made to one of 
I Quart. Journ. Geol. Soc., Vol. lvii., p. 126, 1901. 
2 Bajocian Mid-Cotteswolds ; Quart. Journ. Geol. Soc., Vol. li., p. 390, 1895. 
