71 



* '-.-. * ''.'/' $ : 



of necessity be in accordance with the more or less watery 



nature of the soil. In digging the drains it is well to begin 

 at the lower end. Any ordinary workman can then easily 

 see for himself if the fall is sufficient, as there is always apt 

 to be more or less water at the proper depth, which, if the 

 fall is right, will easily flow away. Drains thus roughly 

 dug must, however, be gone over afterwards by a skilled 

 workman. It is well to employ the most skilled and expert 

 workman to lay the drain, whether it be of stone or of 

 round tile. 



