318 QUEENSLAND AGRICULTURAL JOURNAL. [1 May, 1902. 
land lies so high above a water supply that to bring it to the crops by means of 
expensive steam engines and lifting apparatus would cost more than the whole 
value of, perhaps, a succession of crops, however good they be in consequence 
of irrigation. But where your land is situated on a low river or creek bank, or 
where you have a fairly deep permanent lagoon or swamp, there you may 
irrigate fairly cheaply. I once irrigated 5 acres of lucerne from a big swamp, 
which lay a little higher than the lucerne field, by a very simple device 
which I saw practised in a Chinaman’s garden. aa 
I first cut a shallow trench 5 chains long (110 yards) across the head{iof 
the field, and more trenches a chain apart parallel to it. These I connected by 
drains running in the opposite direction. Then I made two or three openings 
into the heading from the swamp, and the water ran in and filled the drains, 
whence it found its way right through the whole field. A few sods thrown into. 
the lead from the swamp stopped the flow when necessary. 
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