68 



SOILS AND MANUEES 



An ordinary 5-inch funnel gauge is also employed. It gives 

 a slightly lower result, the difference being J inch to 1 inch. 



MONTHLY KAINFALL AND DRAINAGE AT KOTHAMSTED. 

 Average of 34 years, 18711904. 



Results for Maximum and Minimum Rainfall. 



It will be seen that the three gauges give practically 

 the same results both for the average of the whole period 

 and in the two abnormal years of maximum and minimum 

 rainfall. 



On the average of the thirty-four years the rainfall was 

 nearly 29 inches, and, of that quantity, nearly one half 

 passed into the drains. In 1903, with a rainfall of over 



