23 
sils of botli beds are composed of phospbatic salts, but at Upware 
there are a few exceptions to this, chiefly Belemnites. Most of the 
derived species found at Potton occur also at Upware. The bed 
appears to be of Lower Grreensand age and probably nearly coeval 
with that near Potton, and with the Grreensand of Parringdon in 
Berkshire. 
The following are given as derived fossils,—fragments and casts 
of Ammonites, casts of Brachiopoda, Conchifera and Grusteropoda, 
containing phosphates; large Belemnites, and specimens of Grijplim 
dilatata, consisting of carbonate of calcium, and derived from the 
Oxford clay. The remains 'of fishes and reptiles (derived) include : 
Splmrodus gig as ^ Ag., Gyrodus sp.. Aster acanthus ornatissimus, Ag., 
Fycnodus gigas^, ^ Sylodus sp. (spine and SyAienonclms), Fsammodus 
reticulatus, Ag., JEdapliodon sp., Pliosaurusy Ichthyosaur us y Plesiosaurus 
Pahosaurus and Iguanodon. The native fossils include species of 
PelemniteSy Scalariay Cerithiumy Turloy NerinmUy Trochus, Opis (neoco- 
miensisy D’Orb.), Cardiuniy Cyprinay Trigonia [spinosUy Park.), Pecten 
(cottaldianus and Ca/rteronianuSy D’Orb.), Janira (neocomiensisy D’Orb.), 
Plicatula (CarteronianUy D’Orb. and sp. indet.), Ostrea (macropteray 
Sby. and sp. indet.), Rhynchonella (Gihlsianay antidichotomciy pauci- 
costa^i y depr essay nuciformis) y Terebrirostra (neocomiensiSy D’Orb.?), 
Terebratella (oblonga var.), Terehratula fselUy prcdongay depressUy hip- 
popusjy Waldheimia (tamarindusy celticay Moutonianajy Bryozoa, Ser- 
pulcc and Sponges. 
June 4.—A paper was read, of which the materials had been 
fiumished by James Waiisweight, Esq., on a sinking for coal at 
Peedness near Goole, made by the late Mr. Egremont. He had 
consulted the eminent geologist. Dr. Wm. Smith, on the probability 
that coal might be found under the prolongation of the red sand¬ 
stone and magnesian limestone, in the eastern levels of Yorkshire. 
Dr. Smith’s opinion was favourable, borings were carried on to the 
depth of 331 yards, through the red sandstone, without reaching 
the magnesian limestone. At this point the borings were discon¬ 
tinued, owing to the death of Mr. Egremont, and they have not 
been resumed. 
OcTOBEE 1. —Some remarks were read by the Eev. J. Kexeick, 
on Mr. Pengelly’s paper, presented to the Society, on the separation 
of St. Michael’s Mount Pom the mainland of Cornwall. Its 
present state, an island at high spring tide, a peninsula at low tide. 
