INTERNAL TEMPERATURE OF LEAVES. 



, Table XXI.— January 26, 1906. 



251 



Time. 



A.M. 

 11.41 



11.45 

 11.571 



to 12l 

 noon/ 



Black Bulb 

 Thermometer. 



55-2 

 55-2 



Temperature 



Humidity withStomata Temperature 



of Air. outwards above ^ . ^^°' 



au^A Ti „ mata inwards, 



bhade lempera- 



ture of Air. 



58 • 7 



Per Cent. 



55 

 55 



58 



Average 



7-0 

 10-7 



11-1 



10-7 

 11-6 

 11-6 

 11-1 



10-5 



8-6 

 11-9 



11-2 



11-2 

 12-3 

 12-6 

 120 



11-4 



The numbers in the fourth and fifth columns represent the 

 excess of the temperature inside the leaves over that of the 

 surrounding air. The readings opposite to each other were 

 taken almost at the same time, and are comparable with each 

 other. 



Amherstia TiobiUs. — December 6, 1906. 



Time. 



A.M. 



1 1 . 32 



11.43 

 11.45 



11.47 

 11.52 

 11.54 



P.M. 



12. 1 

 12. 3 



Black Bulb 

 Thermo- 

 meter. 



52-7 

 Dull sun 



63-0 



64-7 (breeze) 



65-7 



61-7 



Humidity. Outwards. 



Inwards. 



Per Cent. 

 69 



74 

 73 



73 



69 

 70 



Average 



7 



7 



7 

 12 

 13 

 15-9 

 10-9 

 13-8 



9-6 



9-6 



10-8 



10-8 



11 



10 



10' 



13 



17' 



17' 



15' 



16-9 



12-0 

 13-2 

 14-1 



13-7 



A.M. 



11.16 

 11.32 



Amherstia nobilis. — December 7, 1906. 



7(1)09 



47-7 



Per Cent. 



77 

 75 

 Average 



Outwards. 



9*2 

 12-7 

 10-9 



Inwards. 



10-9 

 16-2 

 13*5 



(33) 



