PEOCEEDINGS 
OF THE 
ratal llaturalifit.^ |l o c t e t jr. 
JULY & AUGUST, 1866. 
GENERAL EXCURSION. 
Friday, August 24th. — The excursion arranged for July 10th, not 
having been carried out, in consequence of an insufficient number of 
tickets having been taken, the same took place on this day, and was fairly 
attended by members and their friends, as well as by several ladies. As 
the weather was exceedingly fine, and the arrangements well carried out, 
a very enjoyable day was the result. 
The party, including the President, Mr. W. Sanders, F.R.S., F.G.S., 
and one of the Vice-Presidents, Rev. Canon Moseley, F.R.S., left 
Bristol at 11.10 a.m., by rail to Charfield, whence they were conveyed in 
vehicles to Wotton-under-Edge. At Charfield the Lower Silurian beds 
were passed over, then for about half-a-mile, the New Red Sandstone, and 
afterwards the Lower Lias. On ascending the hill, the marlstone was 
observed, which continued to Wotton, and part of the way up the hill 
behind the town ; but soon after passing the turnpike the lower beds of 
the Upper Lias Sands were seen, and a quarry was investigated, which dis- 
played \ery clearly the junction of the uppermost beds of the Lias with 
the Inferior Oolite. The President remarked that the steep hill opposite 
the railway station at Bath was composed of the same series of beds, and 
pointed out Ammonites serpentinus as the characteristic fossil. Here were 
obtained also, specimens of Greslya, Ceromya, Trigonia costata (a recent 
species of which genus, as of some other Oolitic fossils, has lately been 
found in Australia), Myacites, Panopsea, Terebratula perovalis, Pholadomya 
fidicula, and several Belemnites. The so-called Iron-shot bed attracted 
much attention, and was considered to be a mixture of silicate of iron and 
hydrated oxide of iron. Referring to the Ammonites, and some other 
spiral shells, Canon Moseley explained that their growth in these 
shapes took place in accordance with known mathematical laws, some of 
which he had investigated. 
