

Photo by] [E. Step. 



FIG. 41. OAK-TREE (Quercus pedunculata). 



Even the strongest and greatest of trees is built up of minute cells, which constitute its stout 



trunk with its wood and bark, its leaves, flowers, and acorns. All the potentialities of this massive tree 



were packed into the cells of the acorn. NORTHERN TEMPERATE REGIONS. 



23 



