— 257 — 



Table V. Sambucus nigra, shadow-leaves. 



TM»» 1 

 INF. 



Udle 



Area of leaf in square 

 centimeters (upper + 

 lower surface) 



Rate of air current 

 in minutes for 1.1 



C0 2 in air in mg per 1 



i Mean CO a content of 

 air in the receiver 



Tempe- 

 rature 



CO2 absorbed per 

 hour per 50 cm* of the 

 upper surf. + 50 cm 3 



of the lower surf. 



CO2 absorbed corr. 

 for temperature and 

 CO2 content 



Intensity of light 

 (Bunsen's units) 



Size of stomatal 

 openings 



1 



29 / 7 13 



70.0 



34 



0.74 



0.57 



20° 



0.9 



0.9 



1.2 





2 



» 



70.0 



33 



0.74 



0.65 



21° 



0.5 



0.4 



0.2 





3 



» 



70.0 



? 



0.74 



0.74 



21° 



0 



0 



0 





4 



» 



70.0 



32 



0.74 



0.58 



21° 



0.9 



0.8 



9.0 





5 



5 / 8 13 



82.0 



31 



? 



? 



21° 



0.8 



0.8 



12.0 





6 



» 



82.0 



35 



? 



? 



21° 



-f-0.1 



— 0.1 



0 





7 



» 



82.0 



31 



? 



? 



21° 



0.6 



0.6 



1.8 





8 



» 



82.0 



35 



? 



? 



21° 



0.4 



0.4 



0.3 





y 



» 



82.0 



35 



? 



? 



21° 



0.8 



0.8 



12.0 





10 



26 / 7 14 



80.0 



— 



— 



— 



21° 



-5-0.1 



-rO.l 



0 





il 



28 / 7 14 



104.0 



29 



0.63 



0.-48 



18° 



0.6 



0.8 



3.6 



1-2 



12 



» 



104.0 



29 



0.63 



0.54 



18° 



0.4 



0.5 



1.2 



1—2 



13 



» 



104.0 



29 



0.63 



0.66 



18° 



-hO.l 



-T-0.1 



0 



1—2 



14 



3 °| 7 14 



110.0 



28 



0.59 



0.44 



25° 



0.6 



0.6 



13.5 



2 



15 



» 



110.0 



28 



0.59 



0.45 



25° 



0.5 



0.5 



3.3 



2 



16 



ï/8 14 



42.0 



30 



0.70 



0.59 



27° 



1.1 



0.7 



13.5 





17 



» 



42.0 



30 



0.70 



0.66 



27° 



0.4 



0.2 



1.0 





18 



» 



42.0 



30 



0.70 



0.60 



27° 



1.0 



0.6 



3.6 





19 



4 !s 14 



58.0 









19° 



-T-0.1 



-t-0.1 



0 



2 



20 



5 /8 14 



48.0 









17° 



-v-0.1 



-t-0.1 



0 





21 



5 / 6 17 



163.0 



20 



0.61 



0.49 



23° 



0.4 



0.4 



9.0 





22 



» 



163.0 



20 



0.61 



0.63 



23° 



-~ 0.1 



-f-0.1 



0.5 





23 



» 



163.0 



19 



0.61 



0.72 



23° 



-f-0.5 



-T-0.4 



0 





24 



6 /e 17 



90.0 



33 



0.56 



0.50 



19° 



0.2 



0.2 



4.2 



1-2 



25 



» 



90.0 



31 



0.56 



0.60 



19° 



-f-0.2" 



-T-0.2 



0 



1—2 



26 



» 



90.0 



30 



0.56 



0.48 



20° 



0.4 



0.5 



0.8 





27 



23 / 6 17 



78.0 



31 



0.44 



0.31 



20° 



0.6 



0.8 



15.0 



l-(2) 



28 



» 



44.0 



28 



0.44 



0.36 



20° 



0.8 



1.0 



22.5 



l-(2) 



29 



25 / 6 17 



94.4 



29 



0.55 



0.64 



24° 



+ 0A 



-5-0.3 



0 



1 



30 



» 



94.4 



29 



0.55 



0.45 



24° 



0.4 



0.4 



1.8 



1 



31 



» 



94.4 



29 



0.55 



0.49 



24° 



0.3 



0.3 



0.7 



1 



32 



26 / 6 17 



58.4 



32 



0.55 



0.42 



22° 



0.8 



0.9 



9.0 



2 



