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AUSTRALIAN AGKICU1.TORK. 



effects of drainage as deep as possible, by the water 

 entering from under. 



Draining Hill and Valley Laud. 



The case illustrated shows how leader drains (a) (c) 



(d) (e) (f) are laid down in the lowest parts, to get an 

 outlet at (bj, into a gully or natural water course. 

 Between (6) and ((/) the pipes are 3 inch inside measure- 

 ment, and from this leader drain from (e) to (d), (e) to (/), 



(e) to (a), 2-inch pipes. The feeder pipes are J \ inch bore. 

 As soon as the pipes are down, commencing at the lower 

 side through all the work, the soil is filled in, the 

 drainers treading the soil over the pipes as they fill in, and 

 are careful that no soil gets into the last pipe laid. 



Open Ditches and Covered-in Drains. The effects of cut- 

 ting even a ditch through a piece of such land as described 

 are very great. Reeds and coarse grasses give place to 

 finer qualities, and what may have been a source of 

 danger from sickness, or a useless swamp in wet weather 

 becomes healthy, valuable cultivation land in all weathers, 

 and especially valuable in dry spells. When underground 

 draining is adopted, the improvement is very marked. On 



