72 



FIRST STEPS IN GENERAL KNOWLEDGE. 



together on tlie stem, and instead of being yellow, 



they were of a sort of flesh-colour." 



" That was the common arrow-head* so named 

 from its arrow - shaped 

 leaves, and belonging to 

 the Water-plantains. 



" The pond-weed t is a 

 common British example 

 of another of those tribes 

 of marsh-growing plants 

 which I have referred to 

 as chiefly foreign. 



" Immediately succeed- 

 ing these," said their 

 father, "there is a group 

 containing half a dozen 

 tribes that would be very 

 puzzling to you, were they 

 common plants. Although 

 their growth is like that 

 of endogens, yet they 

 have net-veined leaves, 



which you know is a sign of the exogens. I shall 



not trouble you with the names of these tribes, 



* Sagittaria so gitti folia, t Poiamogeton natans 



ARfiOW-HEAD. 



