DISCOVERY REPORTS, VOL. IX 



PLATE XII 



UP TO 5% 



b%~ 10* 

 IIS-50S 



51% -95% 



LIMIT OF 0BS N - s 





-j i-i I rx T [j irqiTi^t 



65° 



' '' 'I i ' ' ' ' ' i =p 



60° 



-i i i ' ' "i 



DISTRIBUTION OF SILT, UNDER o-i mm. 



