PRESIDENT’S ADDRESS. 73 
ba | 
Vo. 8 Bore at Charlotte Plains. 
Height of surface above sea-level* _... ee san (the Teets 
Depth of deep lead channel below the surface ... 240 feet, 
Distance from the bore to Swan Hill by way of Talla- 
roop Creek and the Lodden River ae ... 180 miles. 
No. 5 Bore of second line, near Baringhup. 
Height of surface upove sea-level... oe ... 600 feet, 
Depth of deep lead channel below the surface, it On 3, 
Distance from the Swan Hill by way of the Lodden 
River Se is we ee sie sea 1 OW mashes: 
The distance from Swan Hill to the sea, following the channel 
up the Murray River, is about 950 miles. 
The fall of the surface to Swan Hill is—from Bung Bong, 
ft. 6 in.; from Charlotte Plains, 2 ft. 9 in.; and from 
Baringhup, 2 feet per mile. But the fall of the surface to the 
sea, by way of the channel of the river Murray, is only 2°75 inches 
per mile, and even that is not much, since, at Morgan, 400 miles 
up from the sea, there is only from 3 feet to 10 feet above sea- 
level, according to the season. { 
Thus, if these deep leads are imagined as being restored to their 
former condition of rivers, they could not flow out to sea by way 
of the river Murray miles the land were raised up, taking the 
mean of the three examples first given, by about 270 feet above its 
present height as compared with the sea level. This height of 270 
feet, may, moreover, be taken as the minimum elevation required, 
since it would give no more than the present fall, which is im- 
probable, when, as I shall point out, the character of the sea 
bottom in Bass’s Strait is taken into consideration. 
The fall southwards of the country from the main Dividing 
Range, near Ballarat, to the sea, is, also for a long distance over 
Newer Volcanic basaltic plains, analogous to those through which 
the abovementioned bores have been put down. 
Here, also, the deep leads trending southwards have been proved 
by boring, and the same results have been obtained. But it must 
be borne in mind that there is a marked difference in distance to 
the sea in this direction. From Bung Bong, for instance, to the 
sea is 1,150 miles, while from Mount Mercer, where is one of the 
most southern bores, to Bass Straits is only 50 miles. Thus the 
face of the land in the latter case is much steeper when compared 
with the distance. 
*On the authority of Mr. A. Everett, chief draftsman, Department of Mines and Water 
Supply, Victoria. 
j{ Lam indebted to Mr. Jas. Travis, Acting Secretary for Mines in Victoria, for this in- 
formation. 
t Mr. Stewart Murry, Chief Engineer of Water Supply, Victoria, has furnished me with 
these heights above the sea of the river Murray. 
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