62 MICROSCOPICAL OBJECTS FOUND 



Spaccaforno and the south of Sicily, it obviously 

 will not account for the origin of the same for- 

 mation at Palermo, and it is not improbable that 

 the application of the microscope to the former 

 would lead to results similar to what we obtain 

 from the latter. 



Older Pliocene Strata. — English Crag. In this 

 very variable deposit, the greater portion of the 

 organised fragments consist of shells, corals, and 

 Echinodermata. Mr. Searles Wood, in 1835, 

 observed that amongst these, Foraminifera were 

 abundant, as even at that time he had discovered 

 fifty species in the lower Crag formation of Sufiblk 

 alone.* In some of the Coralline Crag of Suffolk, 

 furnished to me by my friend Mr. Charlesworth, I 

 found Foraminifera, especially Textillariae, calca- 

 reous shell prisms, broken shells, small corals, and, 

 in one instance, a stellate spiculum of a sponge, 

 resembling those of the recent Tetheia. 



In the older Miocene strata of Petersburg, in 

 Virginia, we have various Foraminifera, especially 

 Rotalise, TextillariaB, and Miliola?, especially Bi- 

 loculinaj and Spiroloculinse, with spines of Echi- 



* London and Edinburgh Phil. Mag., August, 1845, p. 86. 



