February, 1915. 



KNOWLEDGE. 



49 



Figure 35. Seen from abo\e. Figure 36. Side view. 



Two Views of a Leaf of Bryophyllum. showing the young plants which it produces when broken off and laid on the ground. 



Figure 37. 



A Saintpaulia Leaf with roots springing from the 

 petiole. 



Figure 38. 



Leaves of Tolnicia Menziesii sending out buds 

 where the stalk joins the blade. 



Figure 39. 

 A Begonia Leaf producing new plants. 



Figure 40. 



Pieces of the thick stem of an Aroid \Dicffcnbachia 

 Batisei) used as cuttings, and sending out roots 

 and shoots. 



