56 MINUTE MARVELS OF NATURE 



are not wholly lost but still continue their course 

 through the central portion of these curious leaves. 

 In Fig. 38 is shown the wonderful combination 

 of cells which compose the pine-needle ; and 



Fig. 38. The wonderful structure of the needle-like leaf oi the pine. 

 Actual diameter from corners, T V of an inch. 



between this and the great pine-trunk, with girth 

 greater than a man can clasp, rising sheer to the 

 height of a church steeple, there is only the 

 natural gradation of development. Thus, from 

 the simple Protococcus viridis, which you can 

 scrape by tens of thousands off my old garden 



