7 & 
REPORT—1854. 
GEOLOGY. 
On a curious Structure in the Silurian Slates of Peebleshire. 
By A. Bryson, F.S.A. Scot. 
Mr. Bryson exhibited spccimons*f'rom the slates of Peebleshire, being very remark- 
able convoluted markings, which he at first referred to impressions of Graplolila 
jyteolu of Hark ness. The depth of these convolutions, however, rendered the sup¬ 
position inadmissible. The only other method of accounting for these appearances 
was by supposing them worn tracts filled up by matter deposited in them of a different 
molecular arrangement from the surrounding matrix. 
\r V, rof - J^ CKMAN wnttnqnicated a notice of two elephants' tusks found in the Stroud 
Valley, Gloucester, The largest was slightly curved, 10 feet long, 5 feet in circum- 
tercnce, and 1 font 6 inches in its greatest diameter; the other tusk was curved 
to a greater extent. Remains of rhinoceros and hippopotamus were found in the 
same gravel. 11 r 
ShdU co,nim >t‘icated u Notice of Land, Freshwater and Marine 
banks of l e A ^ S 8 , Hri ? ht Malvern, 100 lcet deep, in sinking a well on ih. 
the well.niiilr ' ° Worcestershire. According to Mr. J. Faulkner, 
n bed of T?. P" ,ln £ trough many gravel beds, the upper mixed with nun 
frarrmentu n ? ll J t ®' wn8 niet with, from 2 to 4 feet thick, containing teeth #"d 
bottom w-u fbt"*? ° r de r'* ‘‘* c P^ ant > rhinoceros, hippopotamus, boar, &c..At the 
and fresh‘“I ?. Jer of sal!(1 y mud, with freshwater shells and rushes. The 1:111,1 
Limncca (1 u’l’t WPrC , e * ,8tin g British species of the genera Pupa, Surciiita, 
Phidium C 4 O l '*j"iosa), Ancylus, Folvata (2 *p-), Bithinia, Cfda 1 nl .' 
were PecLnr /' ", cu ' in £ BenttotolaUum in great abundance); the marine d> e 
ments c? ^ (young), Men (fragment, pg* 
from any known” eiif W 10 k ’ nnd tw ° minute, undetermined bivalves, quite dis , tin • 
MgSla? whhZ^r r f-l tnt or i " l,ie One is an A A arte, very flat and tn 
aomewhat.hnsl^ "W* 6 Gautd * Paci f ca ’ <■ «• Ad. The other is a 
S concentne IF/ L \ C0,UMb * { '*, with . deeply-cut lunula as in Op*, be^ng 
these were exhibited^*' ^ * uddenl y changing into radiating ribs. Drawing* 
0n ct e in ?J°“! T 7n? ° f Erosion ™ Scotland, and its Behtire Date and 
j,\ Q $ Wlt ^ Glactt >l Phenomena . By Robert Ch ambers, FM.SE* 
tyC. * r. - 
Clyde", tho Ida n d*'o nhn n c , u ”. u s > nt 20 to 30 feet above the sea, along 1 * ,e .^u { ^ 
the east coast of SedSSf "'tU T''ll ®J ,d C ? a * t ? f A#, hilt is less remarkabl ^ 
west coast tlm lulU ™, u B hclls found on it are all of recent species. , 
well-defined rectanJnln*^ * fT Bn, °othlv to the present bcacli, broken on!) J 
less than fo ™ a ^ 
is perforated by monyMre. L?? ■ Vertical difl ' often 40 fev * HLr whA* 
fantastic masses of harder rockT so, “ et "” ea *utigb with overhanging st ®?*f’ wrae i 
ia considered to indicate the sea?^® a fi 0, ' n ] 1 ' y . rise U P from the platform. Till *, 
e Sca 8 ac tton during a much longer time than the p 
