THE OOLITES. 133 



sented by the middle estuarine beds with bands 

 of coal and plants, seen in Grist ho rpe Bay; 

 above which is the marine Scarborough lime- 

 ie, with the Inferior Oolite fossH Ammonites 

 Hu mphre \ si a nus. 



The Fuller's Earth in the south of England 

 s the Inferior Oolite, and divides it from the 

 great Oolite. It is a series of clays, marl, and 

 thy limestone known as Fuller's Earth rock, 

 stratum, sometimes blue, sometimes yellow 

 of Full commerce is only a few 



ler's Earth in Dorsetshire is 

 it 400 feet in thickness. In the Mid- 

 land counties the Upper Estuarine beds represent 

 it with 30 feet of sa lys and limestones. On 



the Scarborough coast their thick: o feet, 



:, besides remains of terrestrial plants, they 

 contain the fresh water pond shell Anodonta. 



more local than the Infe- 

 rior () At Mi n chin ham p ton it includes 

 \: Bath it is a freestone 50 feet 

 thick, sometimes with oolitic texture, sometimes 

 marly. It 5 m oolitic to the north of the 

 d 1 (ills. 



. the Bath oolite is repre- 

 sented by the $laie l a concretionary 

 thin-bedded limestone, formed in part by the de- 

 struction of older beds of oolitic rock. It indi- 

 Kimity to land. Its fossils are the 

 fronds of ferns, foliage and fruits of eveads, 

 branches of coniferous trees. There are beetles, 

 dragon-flies, butterflies, and other insects. Lower 

 jaws of four kinds of mammals have been found, 

 named Amphitherium, Amp hi testes, PJiaseolotJierium, 

 and StereognathuSy which, on the evidence of their 

 teeth, appear to be allied to Marsupials, though a 



