414 Dr. F. F, Blackman and Miss G. L. C. Matthaei. 
‘Baue ja] JO ‘swWd ‘bs og 4od Unoy sed 209 sWweuZiyJIW suqued 
28 
a0 a Cala Hae 
aa Ae a | 
220 
340 


a is A od Ic ag PI 
Gd A a a 
ta 
a | 





Assimilation 


ea 
eee a a ae 
pte 






ee a) 
fe eA) ina 
ST 
yo OS 
I te 
| TT | [Respiration | LF] | 
SoC 
ee ae a 
orc. : = 
= ap 







20 


25°C: 30e! 
35C. 4d0C. 
[Apr. 11, 
The curves D and E represent the respiration of the two leaves, cherry- 
laurel and Helianthus respectively, at the various temperatures, expressed 
in grammes COs per 50 sq. cm. leaf-area per hour. 
were as follows :-— 
Helianthus..... 
.... Experiment [X, 0:0018 at 29°5 C.; Experiment XVI 
00007 at 19°-0 C. 
The values determined 
? 
.... Experiment XIII, 00021 at 30° C.; Experiment IT, 
0:0009 at 19°-0 C.; and Experiment III, 0°0008 at 
18°-4 C. 
