46 



STUDIES IN THE VEGETATION OF THE STATE 



LIGHT INTENSITY 

 I— PaAiRia n— Dkbp Thickbt. HI— Opbk Woodiand. IV— Dbkp Forest 



DATE 



April 



May- 



June 



July 



March 31. 

 31. 

 31. 

 31. 

 21. 

 21. 

 21. 

 21. 

 12. 

 12. 

 12. 

 12. 



6. 



6. 



6. 



6. 

 20. 

 20. 

 20. 

 20. 



9. 



9. 



9. 



9. 



27. 



" 27. 



27., 



27., 



August 20. , 



20.. 



20.. 



20.. 



September 8 . . 



8.. 



8.. 



8.. 



October 13.. 



13.. 



13.. 



13.. 



November 3.. 



3.. 



3.. 



3.. 



HOURS 

 P.M. 



LOOA- 

 TIOM 



8KT ooin>moiT 



Clear 



Sather hazy 



Clear 



SUghtly Cloudy 



Clear 



LBXOTH OP 

 RXPOSUBB 

 ZX SBOONDS 



60 



95 



75 



90 



80 



150 



90 



120 



50 



480 



160 



420 



48 



3900t 



180 



1380 



45 



10800 



240 



1500 



47 



11700 



210 



1020 



50-45 



11700-11400 



270-240 



1200-1020 



53-49 



10800-9300 



3H0-315 



1350-1110 



60-53 



6600-6000 



240-210 



720-720 



46-44 



600-480 



110-90 



347-300 



48-48 



140-80 



90-8) 



180-180 



* For comparison the light on the prairie for March 31 is taken as 100. 

 t At the end of 65 minutes the lines were still visible. 



