;olation measures, because the aivn over wliit-li it ( 

 arge and is situated on the uiouiitains where in 



Lake George is situated at tlie bottom of a depr 



greatest known flood lias an are;i of sivtr.'u mil(^s 

 ive miles wide, but as the lake is shallow its area ■ 

 ^easous. The basin, including the lak(^ is thirte.^i 



.'estern side particularly are very steep, and in many places 

 reeipitous. 



hose of tlie Darling basin for the rain-water to run oiT, owing to the 



v<'ly Hat portion 

 ; a considerable a 



other reasons admirahly 



Hain gHuges have been established at ea 

 other i)]aces over the catchment, and att 



other places over the catchment, and at the south end a self-record- 



for four and a-half years, this will show a change in level of one 



find thermometers the temperature of the lake and of the air ; 

 we liave therefore all necessary means for determining uhat goes 

 into as well as what goes out of the lake, except that %\e have no 

 direct measure of the proportion of the rainfall wliich sinks into 



tlie method I have adopted for tliis purpose is to examine tht; 

 rt^cord sheets after rain and see if tiie lake has risen more than the 

 ram gauge shows the fall of rain to havi; ho^m ; if it lias, the 

 di<lerence is obviously due to the inflow of water from the hasin. 

 it IS a remarkable and well established fact that in all ordinary 

 r'lins, and I include in this cateeorv. all up to 1 or 2 inches in the 

 n-gauge 



•-^M iity-tour hours, the lake only rises as much as tlie rain- 

 shows to have fallen, but as might be expected the percent; 



