72 SCIONS. 



which is kept filled with water has for the 

 above reason been attended with success. 



The directions for propagating by cuttings in 

 European publications, generally state the 

 month for placing them in the earth ; these 

 directions would be apt to mislead in this coun- 

 try, where the difference of temperature ripens 

 wood at a different period. 



Cuttings will strike at any period of the year 

 when the young wood is sufficiently ripe and 

 the plant is continuing its growth, but not when 

 it is in a state of rest. 



Scions. 



A scion is a cutting which is caused to grow 

 upon another plant, and not in earth. 



Scions are of two sorts, scions properly so 

 called, and huds. 



Whatever is true of cuttings is true also of 

 scions, all circumstances being equal. 



When a scion is fitted on to another plant, 

 it attracts fluid from it for the nourishment of 

 its leaf-buds until they can feed themselves. 



Its buds thus fed gradually grow upwards 

 into branches, and send woody matter down- 

 wards, which is analogous to roots. 



