FOSSIL FRUIT OF ZAMIA. 



517 



which state the scales may be mistaken for petals, and the 

 fractured axis for the stamen and pistillum. 



Lign. 117. — Fruit of a Cycaeeous Plant, from Scarborough. 



The seeds are concealed by the leaflets. 



(Zamites lanceolata.) 



Here, observes Professor Phillips, we have truly a 

 coal-field of the oolitic era, produced by the intercalation of 

 vast quantities of sedimentary detritus loaded with vege- 

 table matter, brought down by floods from the land, between 

 the more exclusively marine strata of the ordinary oolitic 

 type. 



22. Colltweston Slates. — Near Stamford, in Lincoln- 

 shire, the lowermost visible strata are Lias clays, upon 

 m m 2 



