THE PERMIAN FORMATION. 191 



Middle Permian Maris. — Purplish red marls, with variable bands 

 of hard calcareous and soft mottled sandstone, showing annelid tracks 

 and ripple marks. As a rule these beds are not more than 20ft. or 

 30ft. in thickness, but at Shireoaks Colliery 50ft. were passed through. 

 The Middle Marls rest somewhat irregularly on the Lower Limestone, 

 except where occasionally overlapped by the Lower Bunter Sand- 

 stone, as for instance near Mansfield, these beds stretch as a narrow 

 but continuous band through the county as far south as the Two Mile 

 Houses west of Basford, near Nottingham. At South Scarle the 

 Middle Permian Marls proved to be no less than 140ft. in thickness. 



Upper Magnesian Limestone. — This rock only exists in a very 

 attenuated form (20ft. or less) in North Notts, and dies out southwards 

 near Worksop. It has the same lithological characters as in South 

 Yorkshire, and contains similar fossil remains of a very few species of 

 mollusca, viz., Myalina Hausmanni, Axinus fruncatus, and.4. Schlotheimi. 

 At South Scarle this rock was 40ft. 6in. thick. 



Upper Permian Marls. — A series of red and variegated Marls, that 

 are only found at one or two places in North Notts, intervening between 

 the Upper Magnesian Limestone and the New Bed Sandstone. They 

 appear to thicken out under the Triassic Bocks on the south-east, for 

 some 80ft. or 100ft. of Marls, representing this series, were passed 

 through in the South Scarle boring. 



To be continued. 



THE FLOEA OF WARWICKSHIRE. 



AN ACCOUNT OF THE FLOWEBING PLANTS AND FEBNS 



OF THE COUNTY OF WABWICK. 



BY JAMES E. BAGNALL. 



f Continued from page 129. i 

 CRUCIFER^E (continued.) 



NASTURTIUM. 

 N. officinale, Brown. Water-cress. 



Native: In ponds, ditches, and streams. Common. June to 

 August. Throughout the whole area. 



The var. Sii folium, Beich.. I have collected near Knowle Bailway 

 Station. Bradnock's Marsh, and near Billesley Hall. Tbis does 

 not seem to be more than a luxuriant state of var. a. 



N. sylvestre, Brown. Creeping Yellow Cress. 

 Native : In ditches and pools. Bare. June. 

 I. Sutton, Freeman, Phyt., ;'., 262; ,l 38, Warwickshire," Bree, Cat. 

 Top. Bot. 

 I have never met with tbis plant in the county. N. palustre did 

 occur in Sutton Park, and is not mentioned by Freeman ; 

 possibly mistaken for sylvestre. 



