THE ACORN AND ITS GJfiEMINATION 



11 



of small points which have resulted from the breaking 

 of some extremely delicate groups of minute pipes, 



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

 the acorns, &c., in September. (After Kotschy.) 



called vascular bundles, which placed the acorn in com- 

 munication with the cup and the tree previous to the 



