144 Failure of the Yan Yean Reservoir. 
same mean temperature in both countries, and the result is 
2-51 inches, or one-twelfth as the proportion of the rain that 
reaches the rivers in this colony. 
TaBLE I.—Showing the Mean Rain, and the Mean Temperature, 
and the Proportion of Rain evaporated in the different months 
in England, according to Mr. Dempsey :— 
MEAN BAIN, MEAN TEMP. EVAPORATION. 
Inches. Degrees. Per cent. Inches. 
January. . 1°847 361 29°3 07540 
February . 1:971 38 0 21°6 0-424 
March . . 1°617 43°9 33°4 0°540 
April. . . 1456 49-9 79:0 1-150 
May .. . 1°856 54:0 94:2 1-748 
June. . . 27213 58°7 98:3 2174 
July . . . 2°287 61-0 98:2 2°245 
August . . 2°427 61:6 ~ 98°6 2°391 
September . 2°639 578 80°1 2°270 
October . . 2°823 48-9 50°5, 1-423 
November . 3°837 429 15-1 0579 
December . 1:641 39°3 04:3 07164 
Total rain 26-616 Total evaporated 17-648 
TasiLe II.—Showing the Mean Rain and the Mean Temperature 
of the different months in Victoria, and the Proportion of the 
Rain evaporated, allowing the same per centage to the same 
Mean Temperature in both countries :— 
MEAN RAIN. MEAN TEMP. EVAPORATION. 
Inches. Degrees. Per cent. Inches. 
January . 1°36 67°94 98°6 1:34 
February . 0°95 67-31 98'6 0:93 
March . . 1°60 63°92 98°6 1:57 
April . . 3°18 60°56 98°3 3:07 
May .. 367 54:91 94:2 3°45 
June .. 2°41 51:00 79°0 1:90 
July .. 2:18 49°34 790 1-71 
August. . 3°61 50°66 79:0 2°85 
September. 3:27 55:08 94-2 3°08 
October . 2°59 58°97 98°3 2°36 
November. 427 62°25 98°6 4:21 
December. 1°86 66°29 98°6 1°83 
——_ —_—. 
Total 30°81 Total evaporated 28°30 
—_————. —_—— 
~~ ne 
