UPWARD TRANSPORT OF ORGANIC MATTER 



37 



as well as to keep the phloem thoroughly wet. The 

 method of setting up such an experiment is indicated in 

 Fig. 5. After first sealing the split cork to the stem with 



warm paraffin, it is a simple matter to seal the tube to the 

 cork if the tube is dipped into hot paraffin to a depth of 

 about 2 cm. and then quickly slipped over the shoot and 



