24 T. W. E. DAVID. 
its type, on each side of the deep gorge through which the river 
flows at this point two masonry towers in the Tudor style, con- 
nected by a Tudor arch, will carry the cables of a suspension 
bridge of two hundred and fifty-two feet span, stiffened with a 
timber truss hinged at the centre and ends, this work is now in 
progress. 
The economy of the use of timber in place of iron or steel for 
bridge trusses in this Colony finds an example in the new bridges 
recently erected over the Murrumbidgee River at Wagga Wagga, 
and over the Edwards River at Deniliquin. The former has been 
erected alongside of the old Company’s bridge at Wagga Wagga, 
and reckoned by floor space per span, is by far the largest timber 
structure yet erected in the Colony. It consists of three one 
hundred and ten feet trusses on cylinder piers, with timber 
approach spans, the total length being six hundred and forty-five 
feet, and the carriage way twenty-four feet four inches, with one 
four feet six inches footway. The trusses and deck are of a novel 
design, and consist of timber for chords and braces throughout, 
with wrought iron suspension rods, the total quantity of timber 
used being about 25,000 cubic feet, obtained principally from 
Wyong and the North Coast. The completed cost of the work 
was £14,200. Deniliquin Bridge may be taken as a type of the 
many truss bridges which are erected every year by the depart- 
ment. It is formed of three ninety feet timber truss spans of the 
new standard type, on timber piers with timber approach spans, 
the width of roadway being twenty feet. 
Contracts have been let during the past twelve months for 
timber truss bridges over Namoi River at Walgett, Double Creek, 
at Brogo, Little Plains River near Bombala, Myrtle Creek near 
Casino, Cooradigbee River and Cudgegong Creek in addition to 
many beam bridges, both of high and low level types, in different 
parts of the Colony. 
Sydney Observatory—Star Photography.—During the year an 
unusual amount of dust-haze has interfered with the photographic 
work to some extent, but five hundred and fifteen star photo- 
