means of doing this, as it is tin- best mean- ,.fl. 

 ing the evaporation, and of preventing the pud: 

 of the clay in the soil. 



The foregoing are some of the more important 

 reasons why under-draining j s always beneticial. 

 Thorough experiments have amply proved tin- truth 

 of the theory. 



"Land which requires draining is that which, at 

 some time during the year, (cither from an accumu- 

 lation of the rains which fall upon it, from the later- 

 al flow or soakage from adjoining land, from i-prin^s 

 which open within it, or from a combination of t\v> 

 or all of these sources,) become- tilled with water 

 that does not readily find a natural outlet, hut 

 remains until removed by evaporation. K\ cry con- 

 siderable addition to its water wells up, and M.ak- 

 its very surface ; and that which i> added after it is 

 already brim-full, must How oil' over the surface, or lie 

 in puddles upon it. Evaporation is a slow pn 

 and it becomes more and more slow a> the level of 

 the water recedes from the surface, and is .-helteivd 

 by the overlying earth from the action of sun and 

 wind. Therefore, at least during the perio.l- 

 gpring and fall preparation of the land, during the 

 early growth of plants, and often even in mid- 

 summer, the -iffatt'/'-t'iM^thu top of the water of 

 saturation, is within a few inches of the surface, 

 preventing the natural descent of roots, and, by 

 reason of the small space to receive fivsh rains, cau.- 

 ing an interruption of work for some days after each 

 storm. 



