446 Dr. F. F. Blackman and Miss G. L. C. Matthaei. [Apr. 11, 
Experiment X VII.—Tropeolum (October 8, 1904). Weight of leaf, 
1:25 grammes; Area, 53:2 sq. cm. 




Time. CO, supplied. CO, absorbed. 
10:45 neon .....: Prelim inary 
| as ARON ee 0:0283 0:0086 
TEE oi ee 0:0289 0:0080 
eee ea ede bit 0:-0295 0:0078 
Mean apparent, assimilation 22.033 e...u.-t0-cee se 0:0081 
Respiration, 7.30—11.30, 0-0028 in four hours ... 0°0007 

Realvassimilation per leat... pee eee eck 0-0088 
¥ ‘5 Der D0 :SOcsCW ween erence os. 0:0083 
Experiment X VITI.—Cherry-laurel (October 10, 1904). Weight of leaf, 
1°90 grammes; Area, 54°3 sq. cm. 






Time. CO, supplied. CO, absorbed. 
10.45—noon ......) Prelimjinary | 
12a | 0°0334 0-0080 
1—2 «ee eisl. 0°0344 0:0082 
De iecnceee 0:0348 0:0082 
Mean apparent assimilation ..1........s.scceescs eee 028 0:0081 
Respiration, 7.30—11.30, 00049 in four hours... 0°0012 

Real assimilation, per-leat.jsc..c60ibnee oun. ee 0:0093 
e bs WEE, OOPS CMs Ake ee epi 0:0085 
Then, at another time, we compared the leaves of Lomarea and Aponogeton 
with cherry-laurel, using approximately the same position of the light. 
