374 



PKOCEEDIXGS OP THE GEOLOGICAL SOCIETY. [xipril 22 



The yellow clay (Analysis Xo. 60, Laboratory of the Museum of 

 Practical Geology) contained 



Total iron, Soluble 2-81 



Insoluble 



2-8n 



0-74/ 



3"55 per cent. 



{Sesqui oxide of iron 3"20 „ 



Protoxide of iron, soluble 0*74 „ 



Oxides of iron weighed 1 .^^^^^^^^ ^.^g 



as pr^.toxlcle J " 



The grey patches adjacent to carbonaceous matter (Analysis 

 Ko. 61) contained 



Total iron, Soluble 0'54 



Insoluble 0-40 



0-94 per cent. 



(' Sesquioxide of iron 0*16 „ 



Present as j Protoxide of iron, soluble : 0*55 ,, 



[ Insoluble oxides of iron, weighed as\ ^ ^^ 



protoxide /^"'^^ " 



Another, somewhat similar case is illustrated in fig. 46, of red sur- 

 face loam (rearranged Keuper marls, in a railway-cuttiug between 



Fig. 46. — Bed Surface-loam, consisting of rearranged Keuper marls, in 

 a railivay -cutting between Codsall and Aihrigliton, Shropshire.'^ 



A^* 



\> 





f — 





f:31 



^^ 



WS3==: 



Bleached 

 drift. 



Eed drift. 



1=" 



zzT r—T i 



J3 ^ 



Keuper 

 marls. 



Keuper 

 sandstone. 



Codsall and Albrighton, Shropshire) intersected by seams and pockets 

 of bleached grey loam, a23parently connected with the penetration 

 of roots from the sm-face. 



^ The red loam (Analysis Xo. 67, Laboratory of lluseum of Prac- 

 tical Geology) contained 



