254 



SMITH 



The following table gives the reduction of temperatui-e 

 brought about by breeze of varying velocity on January 22, 

 1906 :— 



Table XXIII.— January 22, 1906. 

 Mature leaf of Magnolia. 



Internal 



that this leaf is not so much affected by breeze as a thin leaf. 



Time. 



A.M. 



11.18 

 11.21 



11.24 



Table XXIV.— January 25, 1906. 

 Leaf of Rhoio discolor. 

 Conditions. 



Temperature 

 of Leaf. 



Still, bright sun . . 42-4 



Fairly strong breeze, bright 



Sim .. 41-9 



Still, bright sun .. 42-3 



Excess 

 over Air. 



14-9 



14-4 

 14-8 



One or two further examples are given with leaves of other 

 species. 



