158 



PROSEEPINA. 



new leaf in, and perhaps it may occur to you that you have 

 Been something like this before. Now make another, a little 

 less wide, but with the part for the cylinder twice as long, 

 roll it up in the same way, and slip it inside the other, with 

 the flat part turned the other way, e. Surely this reminds 



you now of something you have seen ? Or must I draw 

 the something (Fig. 22) ? 



6. All grasses are thus constructed, and have their 

 leaves set thus, opposite, on the sides of their tubular 

 stems, alternately, as they ascend. But in most of them 

 there is also a peculiar construction, by which, at the base 

 of the sheath, or enclosing tube, each leaf articulates itself 

 with the rest of the stein at a ringed knot, or joint. 



