154: 



PEOSERPINA. 



FIG. 16. 



Let a b c, Fig. 16, be three leaves, each, as you see, with 

 c its own root, and by no means dependent 



on other leaves for its daily bread ; and 

 let the horizontal line be the surface 

 of the ground. Then the plant has IK 

 stem, or an underground one. But if 

 the three leaves rise above the ground, 

 as in Fig. 17, they must reach their roots 

 b} T elongating their stalks, and this elongation is the stem 

 of the plant* If the outside leaves grow last, and are 

 therefore youngest, the plant is said to 



r 



grow from the outside. You know that 

 ' ex ' means out, and that 'gen' is the 

 first syllable of Genesis (or creation), 

 therefore the old botanists, putting an o 

 between the two syllables, called plants 

 whose outside leaves grew last, Ex-o-gens. 

 If the inside leaf grows last, and is 

 youngest, the plant was said to grow from 

 the inside, and from the Greek Endon, within, called an 

 'Endo-gen. 5 If these names are persisted in, the Greek 

 botanists, to return the compliment, will of course call 

 Endogens 'IWetS/SopwSe?, and Exogens rf Ovrcrei,S/3opviS<?. 

 In the Oxford school, they will be called simply Inlaid 

 and Outlaid. 



3. You see that if the outside leaves are to grow last, 

 they may conveniently grow two at a time; which they 

 accordingly do, and exogens always start with two little 



FIG. 17. 



