CONSUMPTION OF WATER IN RICE FIELDS. 4II 











Evaporation of water from 





Date, 

 (noon — noon) 



Weather. 



ordinary 

 water 

 surface. 



(ni. m.) 



1 il J ~ 



31- 



Aug. 



— 2. Sept. 



Clear except one single sliower. 



8.2 



0.770 



2. 



Sept. 



— 4- " 



Clear, strong wind and a little rain. 



12.4 



1.059 



4- 



,, 



— 6. Sept. 



Clear. 



1 1.2 



1. 1 20 



6. 



J) 



— 8. „ 



" 



11.7 



1-395 







— 10. „ 



Clear, often a little rain. 



11.6 



i.c66 



10. 



?) 



— 12. ,, 



>» )i jj ») »» 



12-5 



0.754 



12. 





— 14- >. 



Fine. 



ii.S 



0-853 



14. 





—16. „ 



Cloudy. 



6.6 



0.972 



16. 





—18. „ 



Cloudy and rainy. 



4-4 



0.880 



18. 



„ 



— 20. ,, 



Cloudy and a little rain. 



5.0 



0.576 



20. 



M 



—22. 



Cloudy and rainy. 



1.2 



0-434 



22. 



,, 



—25. „ 





3-6 



0.548 



25- 



) ) 



—27. „ 



'> )) J) 



1-5 



0.490 



27. 



'■ 



—29. „ 



Cloudy. 



5-1 



0.698 



29. 



" 



— 2. October. 



Rainy. 



4-4 



0.893 



2. 



Oct 



— 4- 



Cloudy and rainy. 



2.9 



0.590 



4- 





- 7- .. 



Rainy and fine. 



5-8 



0.518 



7- 



>> 



— 9- >. 



Clear. 



6.0 



0.511 



9- 



)) 



—II. ,, 





5-3 



0.494 



II. 



)j 



—13- 



Cloudy and a little rain. 



2.7 



0.1 10 



13- 



5) 



—16. „ 



Cloudy and rainy. 



. 3-1 



0.143 



16. 



) i 



-18. „ 



)j ») )» 



3-8 



0.121 



18. 



) » 



—20. ,, 



Cloudy and a little rain. 



7-4 



0.081 







Sum (124 days). 





533-6 



37.677 









As 135,000. batches of rice arc commonly planted on i ha in 

 Japan, and as each batch covers, during its main vegetation period, 

 the space of about 16 sq. cm. on an average, we see from the above 

 table that in i ha of rice field daily about 41 cb. m. of water cva- 



