152 
THE LIAS MARLSTONE OF LEICESTERSHIRE. 
Ammonites capriconius (?) Clialcomb. 
Betemnites apicurvatus ... Staverton. Some Belemnites from 
other places not identified. 
Dentalium (?). Staverton. 
Turbo cyclostoma . Milton. 
Eucyclus (sp. ?l. Staverton. 
Ostrea cymbium (?). Northampton. Other Ostrea not 
identified. 
Pecten cequivalvis, some very large. Northampton, Milton, 
Daventry, Staverton. 
Pecten liasinus, mostly large specimens. Northampton, Milton, 
Gay ton, Daventry, Staverton. 
Lima . Staverton. 
Limea acuticosta . Clialcomb, Staverton, Milton. 
Plicatula (sp. ?). Milton. 
Plicatula spinosa . Northampton, Milton. 
Avicula cygnipes . Northampton, Daventry. 
Avicula inccquivalvis . Northampton, Milton, Daventry, 
Staverton. 
Inoceramus (?) . Staverton. 
Modiola (sp. ?) . Northampton. 
Mod iota (sp ?), very small. Staverton. 
Macrodon (sp. ?) . Northampton. 
Macrodon (sp. ?) . Staverton. 
Protocardium truncatum.. Northampton, Milton, Staverton. 
Cardita multicostata .. Byfield. 
Cardinia antiqua . Bugbrook, Staverton, Daventry, 
Milton. 
Cardinia lands . Northampton, Milton, Bugbrook, 
Staverton. 
Astarte striato-sidcata . Bugbrook, Staverton. 
Grossly a intermedia . Northampton. 
Pleuromya costata . Daventry. 
Pentacrinite . Staverton. 
Serpida . Daventry,Staverton (very abundant). 
{To be continued.) 
THE LIAS MAKLSTONE OF LEICESTERSHIRE AS 
A SOURCE OF IRON. 
BY E. WILSON, F.G.S., CURATOR OF BRISTOL MUSEUM. 
(Continued from page 127.) 
Finally, let us very briefly consider what was the probable 
origin of the Leicestershire Ironstone. At the outset we may 
affirm that it is impossible to suppose that the carbonate of iron 
