330 Reports and Proceedings— 
it the Tealby Clays (108 feet), oolitic ferruginous beds (18 feet), 
and sandstone and sand regarded as the Spilsby Sandstone. In the 
Alford boring the highest solid rock appears to belong to the basal 
beds of the Red Chalk, and below it is Carstone, and then clay. 
The axis of the anticlinal appears to pass between Alford and the 
border of the Wolds, and is probably continued in a north-westerly 
direction beyond the village of Claythorpe. 
The result of the information now obtained makes it probable that 
the Chalk tract which lies to the south-east of the Calceby valley is 
completely isolated from the rest of the Chalk area. 
IlJl.—Tue Geronocists’ Association. 
Excursions Around Bath. 
The Whitsuntide excursion of the Geologists’ Association, London, 
commenced on Saturday, 20th May, the rendezvous for the present 
tour being Bath, Bradford-on-Avon, and Westbury. The Members, 
about thirty-five in number, arrived in the city of Bath from London 
and were met at the station by the Rev. H. H. Winwood, F.G.S., 
who accompanied the party through Widcombe to Combe Down. 
Mr. Horace B. Woodward, F.G.8., H.M.G.S., President of the 
Association, acted as Director. On the way a small section of the 
Fuller’s Earth formation was examined, while on the top of the hill 
one of the stone quarries was visited. Here Combe Down stone, a 
good freestone belonging to the Bath or Great Oolite, so celebrated 
in the district, was seen to advantage. The President remarked on 
the variability of the stone-beds, both in thickness and character as 
they are traced from one locality to another. In most places the 
freestone was mined, but here at Combe Down a very durable stone 
was obtained in open works. Passing on towards Midford, a halt 
was made at Tucking Mill, once the residence of William Smith, 
“the Father of English Geology,” who was engaged in the con- 
struction of the Somersetshire Coal Canal. Through the kindness 
of Mr. Garrett the Midford Fuller’s Harth Works were then 
examined, and the various processes which the earth undergoes 
before it becomes marketable were explained. ‘The spots where the 
earth was dug were next visited, and some fossils were obtained 
from the hard nodules of earthy limestone that occur in the Fuller’s- 
Earth-clay. The economic Fuller’s Earth is an unctuous clay, but 
it is not plastic like ordinary clay, falling to a powder under water. 
It owes its peculiar detergent properties to its physical characters 
rather than to any ingredients it contains; but its particular mode of 
origin remains to be explained. A number of Ostracoda (tiny 
bivalved Crustacea) have been found in it. From these works the 
members proceeded to the road-cutting, south of Midford railway 
station, and there saw a good section of the Inferior Oolite and 
underlying Midford Sands. The President pointed out that the 
Inferior Oolite represented only the upper part of that formation, 
characterised by Ammonites Parkinsoni and Rhynchonella spinosa. 
Many examples of Trigonia, Ryhnchonella, and some Corals were 
