Ft. 



In, 



30 







, 8 







PLAIN NORTH OF ADEN. 17 



of sea water. The pebbles in the pebbly layers are well rounded^ the 

 largest being about two inches in diameter, and are all of volcanic and 

 metaniorphic rock. The sand is quite loose and incoherent, and the cul- 

 tivable soil consists of a thin covering of silty alluvium over the sand — 



In the well at Imad the depth to the water is ... 

 Depth of water ... ... •■■ 



38 



The ground here however is uneven, so that the depth of this well from 



surface does not give a fair indication of the water level. The water is 



brackish and warm. The well is lined so that no section is obtainable, 



but the surface soil is very sandy silt. At Bir Muktoe 17 miles or 



thereabouts to the eastward there is a — » 



Ft. In. 

 Shallow 'kutcha' well in which the water is from the 



surface ... ... ... ... ... 6 



Depth of water ... ... ... ... 9 



6 9 

 It is very brackish, but is said to become sweet after being largely 

 drawn on. In a shallower well close by the section was — 



Surface soil (clayey silt more or less sandy in parts) 

 Sand ... 



4 

 In a well at Mahilla, 12 miles north-west of Shaik Othman, the follow- 

 ing section is visible ; — 



Ft. In. 



Silty soil becoming more sandy below ... ... 20 



Sand ... ... ... ... ... 4 



Conglomerate, of rounded pebbles up to 6" and 8" in diameter 



imbedded in loose sand ... ... ... 27 



Depth to water 

 ,, of water 



Ft. 



In. 



3 







1 









51 







Ft. In 







51 







2 6 







53 6 



( 273 ) 



