Map of 



Nottinghamshire 



showing- 



the Pebble-Beds dotted 



Minor Current 



[The white circles indicate the localities from Avhich sand has been obtained 

 for separation purposes. The crosses indicate the position of the bore- 

 holes -where the thickest proved parts of the Pebble-Beds occur.] 



Table showing the Localities, the Weight in grams, and the 

 Percentage of the Heavy Minerals. 



Locality. 



Weight. 



Per- 

 centage. 



Locality. Weight. \ J^ge. , 



Bawtry 



Carbtu-ton 



Gorsethorpe ... 

 Python Hill . . . 

 Nottingham ... 



•1386 

 -1438 

 •3541 

 -1536 

 •1380 



0-244 

 0-253 



0-624 

 0-270 

 0-243 ! 



Retford -0602 0-106 



Ollerton -1560 j 0-275 



Enfford -0765 | 0-134 



Farnsfield -1530 j 0-269 



Calverton -0296 i 0-052 



