WATER CONSERVATION SURVEYS OF N.S.W. LXXIXx, 
by railway and three hundred and fifty miles by the water con- 
servation lines, or a total of 1,203 miles. 
(10) Commencing at Narromine and following lines down the 
Macquarie and Bogan Rivers to Bourke, the closing difference 
was 1:22 feet, the distance being two hundred and three miles by 
railway and three hundred and ten miles by the water conserva- 
tion levels, or a total of five hundred and thirteen miles. 
(11) Commencing at Narromine and following lines to Walgett 
the close with the levels of the Railway Department shows a 
difference of 1-51 feet, the circuit including one hundred and forty 
miles by railway levels and two hundred miles by the lines of the 
water conservation surveys, or a total of three hundred and forty 
miles. 
(12) Commencing at Narrabri and following lines down the 
River Namoi and then up the Darling and Gwydir Rivers to 
Moree, the difference at the close was 1-71 feet, the circuit includ- 
ing seventy miles of railway levels and two hundred and sixty 
miles by the lines of the Water Conservation Branch. 
Other instances of closes of large circuits of an equally satis- 
factory character might be quoted, but enough has been stated 
to shew that in the first place the levelling was carried out with 
every attention to accuracy, and in the second place a complete 
examination of the books was made and all available checks ~ 
brought into operation. Nearly all the large circuits comprise 
work done by two or more surveyors working separately, and in 
Some cases at entirely different times. The only reduced levels 
Supplied to surveyors were those of starting points, but where 
circuits of any considerable extent were completed, the surveyors 
reported the result and notice was sent to them as to whether 
the close was satisfactory. Every set of books was examined 
directly it was received and before any payment was recommended 
on account of work done. Any part of the work which was not 
up to the standard of accuracy, or which failed to furnish the 
information required in the printed regulations or in the special 
