134 
wards the close of 1837, preparatory steps were taken for forming 
a company to inclose these sands, but Dr. Mitchell is of opinion that 
they would not yield in 300 years a rental of 300 pence. 
To this paper was appended a notice, by the same author, of con- 
stant and occasional outbursts of water from the chalk. 
The localities of constant outbursts are, the Bourne Mill, near 
Farnham ; the head of the river Mole, near the church at Merstham ; 
(this river flows south of Ryegate to Dorking, below which town 
the bed of the river is dry insummer, but an abundant stream passes 
under the chalk, and reappears lower down;) Leatherhead, close to 
the Guildford road; the powerful spring near the church below 
Croydon; Orpington; the Holy-well at Kempering, on the south 
side of the North Downs; the spring a quarter of a mile west of 
Sittingbourne; Birchington, in the Isle of Thanet; the Lyddon 
Spout in the cliffs between Folkstone and Dover; the Holy-well, at 
the foot of the cliffs forming Beachy Head, one mile from East- 
bourne; the spring which is the source of the Chadwell, and the 
main spring of the Amwell. 
Occasional Outbursts\—The Bourne, near Birchwood House. 
During the last outburst, which was in the spring of 1837, the 
water flowed in great volume to Croydon, and continued to do so 
for six weeks. Later in the same year, another rivulet burst forth 
in Gatton Park, between Merstham and Ryegate; and a third in 
Nonsuch Park, near Ewell. 
A communication was next read, entitled, ‘‘ A notice on the dis- 
covery of the remains of Insects, and a new genus of Isopodous 
Crustacea belonging to the family Cymothoide in the Wealden For- 
mation in the Vale of Wardour, Wilts,” by the Rev. P. B. Brodie, 
F.G.S. 
The quarry in which these fossils were found, is situated near the 
village of Dinton, about 12 miles west of Salisbury. Not having 
been worked for two years, its structure could not be clearly ascer- 
tained, but the following section may be considered as affording a 
near approximation to the order of the beds. 
1. Clay, forming the surface, a few inches. 
Ze INV bite ylimestOnenmn ey ie nar eerie 3 inches. 
eda eae ect eu oloke le ake tole toca 2to3 — 
4, White limestone, similar to No. ah 3 to 4 
containing shells and cypris.... i a. 
5. Crystalline grit with cyclas ...... 2 — 
GeO lAN ADS cg nicis thle cee feeee eich teat 2 — 
7. Clay, with layers of grit.......... 30 — 
SMC Lays aicizte te etatann tele cloiteye Menee erekere 2to3 — 
9. Light brown sandstone, full of small 
cypris and cyclas, and consisting 
in the lower part of comminuted 
SHEDIS Sh it's te arte su)lole oh} take ecto. 
10. Blue and lower clay, abounding with 
fragments of shells......eescee 
