244 The Data on which we have to depend 
estimate of 8:41 inches as the average watershed for Eng- 
land, and by correcting this amount for the difference of 
temperature, I concluded that four and a half inches would 
ese an approximation to the watershed of the Plenty 
asin. 
TaBLE I.—Showing the Mean Rain, the Mean Temperature, and the 
Proportion of the Rain evaporated, and the Watershed, and the 
Evaporation from Water in the different months in England, accord- 
ing to Dr. Dalton’s tables. 
EVAPORATION. 
Mean Rain. Mean Temp. From Land. From Water. Watershed. 
Inches. Degrees. ™ Inches. Inches. Inches. 
January ... ... 2°46 36 09 1-61 1:50 1:45 
February ... ... 1:80 36°75 053 2°00 1:27 
March... ... ... 0:90 42 65 0:62 3:50 0-28 
Apriliesceee econ, 47-57 1.49 450 0:23 
May ht! i. 8. 418 55°26 2:69 4:96 1:49 
June ... ... ... 248 60-68 2:18 6:49 0°30 
July ... ... 2. 4:15 63:17 4-09 5°63 0:06 
August ... ... 3:55 62:75 3°38 6:06 017 
September <5, @29 57-000 2:95 3°90 0°33 
October ... ... 290 50°37 2°67 2°35 0:23 
November... ... 2°93 43:12 2:05 2:04 038 
December... ... 3°20 40-09 1-48 1-50 1-72 
33 55 25:14 44-43 8-41 
TaBLeE II.—Showing the Mean Rain, the Mean Temperature, and the 
Proportion of the Rain evaporated, and the Watershed, and the 
- Evaporation from Water in Victoria, deduced from Dr. Dalton’s 
tables, allowing the same evaporation to the same mean temperature 
in both countries. 
EVAPORATION. 
Mean Rain. Mean Temp. From Land. From Water. Watershed. 
, Inches, Degrees. Inches. Inches. Inches. 
January ... ... 136 | 67-94 1:34 8:00 0-02 
February ... ... 095 67:31 0-93, 8-00 0-02 
March oes) sa-2 960 63:92 1.57 649 0:03 
April sent pee. Hole 60-56 2:75 * 6:49 0:38 
May Aso) ode hare 54-91 2 36 4-96 1-31 
June mre ete TAL 51:00 2:21 4-50 0-20 
July aye eaait 743s) 49 34 1:88 450 0-30 
August ... ... 361 50 66 3:32 4°50 0-29 
September son 55°08 2:10 4:96 117 
October ... ... 2:54 58-97 2:28 4:96 0°26 
November... .,. 4:27 62-25 3°74 6:49 0:53 
December... ... 1:86 66-29 1-83 8:00 0:03 
a —— — —— _ 
30:85 26 31 71-85 454 
— ne ae — a i ee 
The above tables show that my conclusion is arrived at in 
the manner described by Mr. Hodgkinson, and if a further 
correction of half an inch be made for our drying winds, four 
