ABSOKPTION OF NTJTRIMENT BY INSECTIYOEOUS PLANTS. 



273 



Series II. — All D. rotundifoUa except B, D. intermedia. 

 Preparation. Examination. 



Time. 

 July 28th. 



^E 



11 



^5 









<U P (S 



2 00 a 



11.50 a.m. 



12.20 p.m. 



12,45 p.m. 



1.0 p.m. 



No 



No 



No 



No 



2.0 p.m. 



No 



2.25 p.m. 



No 



Traced 



No 



P..2++ 



Flower 

 stalk, 2 

 leaf stalks, 

 bud and 

 young 

 blossom. 



No 



No 



No 



No 



No 



3 flowers 

 and stalks, 

 5 leaves and 

 stalks. 



No 



No 



No 



Trace* 



No 



3 leaves, 1 

 bud and 1 

 flower stalk 



1 flower 

 stalk and 2 

 and 

 stalks. 



5 leaf stalks 

 1 bud. 



1 flower 



stalk, 



flower bud 



and 2 leaf 



stalks. 





Flower 



stalk and 2 



leaf 



stalks (?) 



In all. 



In all. 



Flower 



stalk and 



one leaf 



stalk. 



1 leafstalk. 



Flower 



stalk and 2 



leaf 



stalks (?) 



Remarks on Series II. — The presence of absorbed lithium in 

 various parts of the plants (as shown by column 6, Table 2)^ is not 

 quite so constant and invariable as in Series I., but this may be satis- 

 factorily explained when the unnatural and disturbed state of the plant 

 is considered. The value of the result is unaffected, as experiments B 

 and C, Series II., conclusively show that the plants possess the 

 power of absorption through their leaves ; for the examination of the 



♦ In each case a faint trace of lithium was found near the bottom of the 

 cone ; it vanished almost directly, and did not reappear. 



t Time of commencement and end of the preparations of the plants in Series 



j j Lithium was in all cases found in the stalks of the prepared leaves ; they are 

 therefore no? included in the above Table. 



11 The blotting-paper cone was in this experiment inverted, the apex being 

 downwards, and thus both the leaves and stalks were inclined towards the plant. 



T 



