880 Studies on the Palceozoic Soils of North Wales 



character from the sand fractions obtained from EngHsh soils which 

 consist mainly of quartz granules. 



In order to get further light on the structure and composition of 

 North Welsh Palaeozoic soils, a number of analyses were made of the 

 fractions obtained in mechanical analyses. Determinations were made 

 in each case of Silica (SiOg), Ferric oxide (FcgOa) and Alumina (AI2O3). 

 Soils from each of the first three types described were thus examined 

 and the results are shown in Table X. 



