CHAPTER V. 



owing to the discharge of a volatile oil from the 

 tissues. You must break off a leaflet near the base, 

 and place it gently on the water with the convex side 

 downward : it then glides along like a small green 

 gondola. I have seen this navigation succeed per- 

 fectly ; but it often fails for some reason. I think it 

 is necessary that the weather should be hot. You 

 must depress the stern a little in order that the 

 propeller may act.* 



The fruits of Schinus are said, by Hooker, to be 

 " sugary and edible " ; they are certainly so ornamental 

 that it would be a pity to eat them if any other pro- 

 visions are to be had. 



Fig. 16. PISTACIA TEREBINTHUS, THE TEREBINTH. 



* Sir Thomas Hanbury is an adept at this little experiment. 



