THE ACORN AND ITS GERMINATION. 



11 



of some extremely delicate groups of minute pipes, 

 called vascular bundles, which placed the acorn in com- 

 munication with the cup and tke tree previous to the 



FIG. 1. Sprigs of oak, showing the habit and the arrangement of the 

 acorns, etc., in September. (After Kotschy.) 



