THE NATURALIST, igo8. 



Platp, XXII. 



Boulder Map 

 Yorkshire 



Western Croup 



Westmorland. 

 Tees VALLtr. 



Northern Croup 



jCOTTisH Highlands. 



lOUTH SCOTLAND. 

 .iORTHUMBERLAND. 

 DUBHAM 



L. Eastern Croup 



South NonwAr. 

 Sweden 



S. Shap Cranite . 



Wastdale Cra6. 

 Westmohuand. 

 L. LaurvikiteMiicite Stenite; Nobway. 

 R. Rhomb Porphyrh- Norway. 

 T Trachyte Eildon HaLs. Scotland. 



C. CrITS PERTMSHIRE. SCOTLAND. 



J. Jajper (Radiolarian Chert) JvSconANH 



AC.ARCHEANtflANJTE. Cl/Lf or BOTHNIA. 



