294 REV. G. HENSLOW ON TRANSPIRATION 
completed. All superficial moisture being carefully removed by 
slight pressure between sheets of blotting-paper, they were 
submitted for four and three days and nights respectively to 
diffused sunlight and total darkness respectively, with the following 
results :— 
Loss per hour Loss per hour 
by Day, Min. | Max. by Night, Min. | Max. 
No. I. No. III. No. I. No. III. 
023 04 385| 4$ | o 023 | 385] 4i 
028 041 38 40 014 012 38 42 
017 020 40 40 013 017 39°5| 44 
016 022 40 42 014 022 40 42 
Means -021 032 394| 407 | 014 ‘018 392| 422 
Loss per hour Loss per hour 
by Day, Min. | Max. by Night, Min. | Max. 
No. IV. No. IV. 
o 
043 à | 425 035 ai | 42 
‘025 38 42 020 40 44 
017 41 45 014 46 50 
Means...... 028 40 43 023 42 44 
Total mean Total mean . 
loss by Day. Min. Max. loss by Night. Min. Max. 
*027 40? 42° -018 40° 43° 
Comparing these results with the mean losses by transpiration 
under clear diffused light and total darkness, the latter were as 
follows :— 
Total mean Total mean 
loss by Day. Min. Max. loss by Night. Min. Max. 
*036 42^8 45° *029 41° 45° 
In both cases the loss is greater by transpiration than from an 
artificially saturated condition, and whether the loss be by trans- 
piration or evaporation, it is greater by day than by night. 
Pia ei 
