236 QUEENSLAND AGRICULTURAL JOURNAL. [L Aprrn, 1902. 
THe Oven Dray. 
Open drains answer two purposes, in that they rapidly carry off the surface 
water, and that they intercept seepage water from the higher land. The size 
and depth of open drains must depend upon the quantity of water they have to 
carry off. If the quantity is small, the cheapest way is to run a furrow with a 
plough and throw out the loose soil from the furrow with a long-handled. 
shovel. / 
Unbererounp Drains. 
for erent 
in a widt 
shoulder to shoulder for the whole length of the drain, lay timber or stones ab — 
the back of the slabs, cover all with a layer of grass, and then fill up with clay 
first and then soil. The cost of such a drain is about 5s. per chain (22 yards). 
A very effective form of drain is one which I made some yearsago. I called it the ~ 
Burner Eartu Dray. 
EE EE ae 
—— 
The drain was dug to a deptk of 4 feet. Then it was half-filled with dry — 
brushwood, over which the clay was well rammed. The brushwood was then 
fired at one end, and in burning out baked the bottom, sides, and roof into a kind 
of brick. : 
Stone and log and slab drains are valuable to the selector, owing to theit 
cheapness. Their construction will be better understood by the diagrams than 
by description. 
