President’s Address. 
19 
Large tracts of country have been laid out under the 
Geodetic system in great blocks, each of which is then 
subdivided by contract surveyors, for sale. The great 
advantage is thus obtained of immediately embodying these 
numerous contract surveys in the general map of the colony 
with precision ; and it is admitted by those undertaking the 
subdivision of blocks by contract, that much greater despatch 
and accuracy is obtained in their undertaking when the 
blocks are laid out geodetically. 
The geodetic division of lands, of course, has only been 
applied to unsurveyed country, but the work of the geodetic 
surveyor extends beyond this : his duty is to afford data for 
the construction of an accurate map of the Colony, and this 
involves not only the connection of all the surveyed lands, 
but the erection of marks spread over the country, so that 
any future surveys may be at once accurately placed on the 
maps, and the survey of the boundaries of runs facilitated. 
The great General Survey of the Colony is thus being 
done by the prosecution of the Trigonometrical Survey in 
connection with the Geodetic work proper. Trig, stations are 
erected, and their positions fixed, and lines (meridians and 
parallels), are run from those trig, stations, traversing the 
Colony in all parts, 
The Survey extends now from the western boundary of 
the Colony to thirty or forty miles to the east of Port Albert, 
all the coast line between these points, with the exception 
of Cape Otway, is connected with the trigonometrical lines. 
The line of the boundary between South Australia and 
Victoria is now being determined ; lines and trig, points are 
being laid down in the northwest districts. The triangulation 
of the northern plains is in progress. In the north east of 
the Colony, Geodetic lines, with a secondary triangulation, 
have been extended from Benalla to the Indi and Snowy 
Ranges, and preparations are being made to connect by 
triangulation the work going on in South Gipps Land, with 
that in the north east, across the great dividing ranges, of 
which Raw Baw, Mount Useful, and the ranges about 
Wood’s Point, form a part. Altogether 120 trigonometrical 
stations have been fixed, and their precise latitudes and 
longitudes obtained. 
The construction of a new map of the Colony, from the 
work already done by the geodetic surveyors, is in progress : 
and the whole topographical work connected and fixed by 
b 2 
