WATER SUPPLY AND IRRIGATION. 167 
be advanced in favour of the steam plant, as will be seen by 
reference to the following figures showing the cost of accuian 
by both systems 
** Cost ie stéam plant 2.0 8)? es £5,000 
Weekly goer il 
engineer and seein @ 80) = £4 0 0 
rivers ... @ 30/= 410 0 
1 steersman OS 1 oe 
eoopman ...  «.s »- @ 30/= 110 0 
1 coven a rope) .-@B/= 1 5 
are .. @ 20/= 2 0 
coo ; te OF Soa 
10 rations his Me Ww/= 6 0 
il, Teen ic a ee 
Interest @ 8 per vein 8 0 0 
Sieescdicn @ 12 3 vein “cent. 1z2 0 0 
Total .. £42 0 
dee 0 
“The work done in a a is + equivalent to about 2,500 cubic 
yards, which makes the cost 4d. per cubic yarc 
“This estimate of cost is based on the supposition that there are 
no stoppages and that there is no delay between one tank and 
another ; but, as a matter of fact, there are many stoppages and 
much delay in transporting plant. This latter rink of loss in- 
creases to a great extent in sandy country or in wet seasons, when 
This affects 
the estimate of cost to a considerable extent ; for “ike a plant of 
this character, pering trained men to tie it, no reduction can 
be e in the weekly expenses during the time it is idle; con- 
they te we ei fifty-two weeks’ wages, &e., at £42, gang ee 
our weeks’ work at 2,500 cubic yards a week, or 85, ne 
cubic yards, costing £2,184, being at the rate of 6d. per cubic y 
pena fio" bullock plant... ...  «.. a re 
reas £3 0 0 
a. er @ 60/ = 
5 alloce detvere @ 30/= 710 0 
2 ploughme @ 30/= 3 0 0 
5 scoopme @ 30/ = 710 0 
1 cook @ 30/= 110 0 
is —— @lj= 9 00 
st @ 8 per nr a . 
oer i @ f@ 10. mon ote - 
a 
° 
Total .... i 
in “a rong plant like this all cee boast st 100 cubic yards 
Aweek, which would cost 6d. per cubic y 
