174 
On Irrigation in Tasmania . 
£ 
Interest upon ditto at 10 per cent. 22 
Repairs. 5 
Man and boy for half a year. 40 
Keep of bullocks for ditto. 12 
Total cost for 44 acres . £79 
Or per acre £1 15s. per annum. 
Pumping by Wind .—I am unable to state the expense 
of wind machinery, but it would probably cost much 
less than steam machinery of the same power; and as 
there would also be a saving in repairs and management, 
and no fuel would be required, the total expense of irri¬ 
gating by this means would most likely be much less 
than by steam : it would, however, require the additional 
expense of a reservoir, as its work would be so irregular. 
Including this, however, the first outlay might be £1 per 
acre, and the annual expense 10s.; but in some situations 
could not be used, and in all it would be rather uncertain. 
The most advantageous plan for raising water for irri¬ 
gation would be for an individual or company to establish 
a powerful steam-engine, so as to supply several neigh¬ 
bouring estates, selling the water at a certain price. Thus 
if it was proposed to water 2200 acres, raising the water 
thirty feet, a 50-horse engine might be worked night 
and day ; and the estimate for this w'ould be,— 
£ 
Cost of engine and boiler, putting up, &c. 2000 
Buildings and machinery. 400 
First cost. £2400 
Or about per acre £1 2s. 
