PALOZOIC ROCKS BENEATH NORTHAMPTON, 487 
brown sandstone, followed by blocks of Carboniferous Limestone in 
a light-green sandy matrix, in no distinct order, and with no appa- 
rent regular bedding. ‘These were succeeded by red, green, and dark- 
coloured marls, the last bed of dense dark shale resting upon an 
eroded surface of Carboniferous Limestone (unfossiliferous) at 699 
feet. The beds, so far as it was possible to make out, were in the 
following order :— 
a 1 aly ms tise © TAY, 
No. of bed. 676 6 
35. Brown sandstone, with Carboniferous fossils ...... 0 6 
06. Blocks of limestone in green sandy matrix ......... eG 
37. Limestone, with pyrites and fossils (much broken 
UPD aaiseersisOenin os seaetaiae sees en. dda daesieeea es tetsemacesshtan 
momlard rows WmMestone: s.... sca cesiewcdcaseentartae acces ORs 
39, Green and brown limestone, and sandstone......... TG 
40, Fragmentary limestone in sandy matrix (no regular 
|S/261G hatte San ae oe oe aR ie ere en eerae ate ae, | 
41. Green and brown mar! (very much disturbed)...... 3 0 
49. Red, green, and black sandy marls .................. 3 6 
48. Black shale, on an eroded surface of Carboniferous 
IBATING HOME erence xc cintid cusniPasinhawn ials's watonimecs 3 0 699 0 
The true Paleozoic rocks commence, without doubt, at 699 feet, 
the beds above representing a littoral deposit before an escar pment 
of Carboniferous Limestone, and over which the Trias seas encroached 
late in that period, which accounts for the absence of the “ Water- 
stones ” and the thin deposit of the Trias. 
Among the fossils collected from these littoral beds the following 
were identified by Mr. R. Etheridge :— 
PNGEINOZO Bis 2 Sica soasacs Coenites. 
Hehinodermata ......... * Actinocrinus 
Sina EMEN PL bistenrie: Poteriocrinus ossicula of stems. 
get, NM Tea ee Rhodocrinus | 
PANUINE LAs se savas saeee ce Serpulze. 
NSIVOZOR) oasintrccreiwact ation Fenestella. 
SM ar perches eatea St Ceriopora. 
pace awnec se beteae Ceramopora (?). 
archiopads eeneeaeedaent Athyris Roissyi. 
ROE See SN a8 Chonetes. 
Ec And ty renin Mena Productus semireticulatus. 
Sioa ot psEmenaieh es Rhynchonella pleurodon. 
PA Bas oe SARE Spirifera glabra. 
UA MME 5 5p I striata. 
WO SE Piles crete Streptorhynchus crenistria. 
Semectacte Strophalosia rhomboidalis. 
Lamellibranchiata ...... Aviculopecten. 
PEG al) Yeates Edmondia. 
Below the limestone, at 699 feet, a series of limestones and shales, 
the latter of a dark green and black colour, two beds of which were 
undoubtedly fireclay, extended to a depth of 778 feet in the follow- 
ing succession :— 
