62 An Account of the Soil [pt. i 



season ; in a period of drought rain-water may be gently 

 supplied from a water-can, although it is hardly possible 

 to simulate the action of rain itself. 



Fig. IG. The drain gauges, Rothamsted, used for studying the 

 amount and composition of drainage-water. 



The gauges used at Rothamsted for studying drainage 

 problems are shown in Fig. 16. 



The various bad effects of wet weather are reflected 



