326 



s. KUSANO : TRANSPIRATION OF 



Name of plants. 



Ci'ijplom cria japonica 



Fimts Tliuriher<jii 



Podocarpus sinensis 



Torrcya nucifera 



Ghama'cyparis ohlusa 



Quercus glauca 



Pittosporum Tohirci}^ 



lUiciurii Anisatum 



Ternsirœmia japonica-^ 



Thea japonica 



Eriobolrya japonica 



Photinia <jlahra 



Fatsia japonica 



Daphniphyllummacropodiim. 



Age. 



3 



5 



6 



7? 



5 



3 



8 



6 



4 



8 



8 



5 



3 



5 



Number 



of 



leaves. 



1422 



670 

 2340 



27 



124 



93 



72 

 89 

 36 

 184 

 7 

 36 



Area of 

 leaves. 



ndm. 



Fresh j Dry 



weight of I weight of 



leaves. 1 leaves. 



5.552 

 11.430 

 15.028 



6.656 

 16.412 



9.306 

 11.400 

 10.820 

 14.644 



73.925 

 106.547 

 113.405 

 39.065 

 37.732 

 12.579 i 

 35.770 

 46.374 

 22.289 

 49.880 

 30.141 

 30.738 

 44.174 

 35.770 



35.145 

 38.815 

 49.970 

 14.890 

 18.000 



6.030 

 13.710 

 23.770 



8.634 

 34.575 

 14.490 

 14.325 

 12.785 

 14.900 



All the materials remained healthy cluruig the experiments, 

 only a few leaves having fallen off in the case of Pittosporum 

 and Ternstrœmia. 



With these materials daily measurements have shown that 

 the amount of transpiration of each species decreased day after 

 day until it attained a minimum value at the end of January"^ 

 (conf. Table III), as had been expected ; it increased together 

 with the rise of temperature, and at the end of JMarch, it be- 



1) At the beginning of the experiment, the number of leaves was 14o; area 12.610; 

 fresh weight Ö9.05 ; dry weight 14.97. 



2) At the beginning of the experiment, llie numljcr of leaves was 70; area Ö.982 ; fresh 

 weight 23.191 ; dry weight 9.00. 



Ö) Table IV shows the actual minimum tran;>j)iraliuii, but a.^ this uli.'ervation was made 

 in bad weather it can not be considered to be normal. 



