70 
GEOLOGICAL SECTION. 
Friday. June 28th. — This section started for the first geological 
walk of the season, having for its object an examination of the Bradford 
clay, at Bradford-on-Avon. The members left Bristol by the 3.50 p.m. 
train. 
The quarries were visited, and searched as much as the limited time at 
the disposal of the party would permit. An exceedingly fine section of 
the great oolite beds of building stone was noticed. On the top of them 
was clearly seen the Bradford clay, about 20 feet in thickness, and its 
characteristic fossils were collected ; among these were Terebratula digona, 
and the beautiful pea encrinite (Apiocrinus rotundus) of which the 
members brought home a great many specimens. These exquisite sea- 
lilies were found at the bottom of the clay, disjointed, but with the roots 
still adhering in an upright position to what was once the stony bottom 
of the oolitic sea. Many specimens were obtained incrusted with Serpulse, 
and a charming little Bryozoon {Diastopora diluviana)— the minute poly- 
pidoms of which would prove a source of delight to the microscopist. Of 
course the rags and freestone of the great oolite beds did not escape the 
fossil-collectors' attention, and some characteristic species rewarded their 
search. Among others were noticed the Terebratula coarctata, the prettiest 
of that genus of Brachiopods ; a very fine example of Isastrsea explana- 
tula, and Montlivaltia Smithii. 
The following is a list of the principal fossils seen in the different bags 
and baskets : — 
Diastopora diluviana 
Montlivaltia Smithii 
Isastrsea explanatula 
Apiocrinus rotundus 
Lithodomus inclusus 
Avicula costata 
Pholadonrva socialis 
Terebratula coarctata 
Terebratula digona 
maxillata 
Rhynchonella concinna 
■ — obsoleta 
Serpula 
Ostrea 
Several small univalves 
The members then left Bradford, and walked by the side of the Kennet 
and Avon canal to Limpley Stoke, in time for the returning train to 
Bristol. So short was the time allowed, that all felt another visit to the 
quarries should be undertaken. Altogether a most pleasant evening was 
spent, all appearing to enjoy the excursion. Only one thing tended to 
lessen the pleasure, viz., the absence of the esteemed Vice-President, Mr. 
Thomas Pease, F.G.S., who missed joining the others by an uufortunate 
mistake which caused him to get out at a wrong station. 
