444 



HOW PLANTS ARE SCATTERED 



hair stuck full of the needle-like fruits of a grass 1 was sent as 

 a present to the so-called king of Ternate. Scattered from the 

 hair of this single animal, the grass soon spread over the whole 

 island. 



420. Uses of stone fruits and fleshy fruits to the plant. 

 Besides the dry fruits, of which some of the principal kinds 

 have been mentioned, there are many kinds of stone fruits and 



\J 



C 



D 



FIG. 345. Barbs and hooks of burs 



A, barbed points from fruit of beggar's ticks, x 11; B, hook of cocklebur, x 11; 

 C, beggar's ticks fruit (natural size) ; D, cocklebur hook (natural size) 



other fleshy fruits. Of these the great majority are eatable by 

 man or some of the lower animals, and oftentimes the amount 

 of sugar and other food material which they contain is very 

 considerable. It is a well-recognized principle of botany that 

 plants do not make unrewarded outlays for the benefit of other 

 species. Evidently the pulp of fruits is not to be consumed or 



1 Andropogon acicularis. 



