]N.ii:( rioN K.\i'i;uiMi;Nrx on plants. 19 



louves than in iullorescences and young parts. 

 //. lithium, when injected hito a part of the cotyledon, 



rhizome, bulb or root, is carried up to the shoot. 

 c. In some water plants, e.g. Myriophyllum, injected hthium, 



is found abundantly in the œrial parts, but very little or none 



at all in the submerged parts where the injection was made. 



3. The injection experiments performed with i)lants cultivated 

 in the moist chamber show a ^•ery feeble conduction of the sub- 

 stance injected. 



4. Conduction of lithium injected into deciduous trees during 

 winter is more or less perceptible, but is much less manifest than 

 in leafy plants. 



5. Upward conduction is always conspicuous ; downward con- 

 duction generally less so, though sometimes very manifest ; while 

 transverse conduction is very feeble. 



6. Injection solutions are conducted mainly through the xylem 

 <;lements, and also through the phloem parts, though other tissues 

 permit conduction in some degree. 



7. The speed of conduction of an injected solution varies 

 according to its concentration. 



8. Certain fungi {Omphalia sp., Caprmu>< sp., Corfinellus (idocles) 

 indicate conduction of injected lithium. 



0. Algoö [Sargassiun Ilorneri, Ecklonia cava, Bryosjns imhnosa, 

 etc.) scarcely conduct injected substances, but mere diffusion of 

 these may occur, and an injected solution passes out of the injection 

 wound some time after into the sea-water. 



10. Vascular bundles are traceable by means of the injection 

 method. 



