Kit )'/> TJA X AGRICULTURE. 



berseem both of which remove more potash and phos- 

 phoric acid, but obtain a large quantity of nitrogen from 

 the air, satisfactory crops are raised. This seems to con- 

 firm the results of the analyses of Nile mud already given 

 which show the suspended matter of the river to be 

 deficient in nitrogen. 



The amount of suspended matter in Nile water varies 

 from month to month, following practically the same curve 

 as the height of the river. When at its lowest level in 

 May, June, and July, the water is poorest in mud, but as 

 the river rises so the suspended matter increases. This 

 refers to observations taken at Cairo. As it takes a con- 

 siderable time for the water to traverse the regions from 

 the south, it follows that the increase in the suspended 

 matter would take place a few weeks earlier in these 

 regions. 



During the years 1896-1899 the amounts of dry sus- 

 pended matter per 100,000 parts of water were determined 

 and found to be as follows : 



DRY SEDIMENT IN NILE WATER, PER 100,000 PARTS. 



