Miss I. H. Lowe — Igneous Rocks of Ashprington. 351 



The field work necessitated a series of visits on which Dr. Raisin 

 accompanied me, and 1 should like to express my gratitude to her 

 for the unfailing help she has given me in this work, and to 

 Dr. H. K. Thomas, who kindly made some valuable suggestions. 

 The work was carried on in the Geological Department of Bedford 

 College. 



2. The Field Relations of the Igneous Hocks. 

 A general account of the field relations of the volcanic rocks to 

 the sedimentary in the Ashprington area is given by W. A. E. Ussher 

 in the Geological Survey Memoir of Torquay (pp. 77 et seq.). 



Finer 



Volcanic 



Ash. 



FlG. 1. — Map showing the outcrops in the Harbertonford area. 

 Scale, 4 inches = 1 mile (approx.). 



The exposures ' of igneous rock in the area east of Harbertonford 

 are shown in five quarries, and form crags on the slopes of the hills 



1 The exposures to which reference is made are marked on the accompanying 

 map by Roman numerals. 



