386 Field, Forest, and Wayside Flowers 
But if we turn and look northwards through the 
woods the trunks appear bare. By this little bit 
oe 
of wood-lore Indian hunters used to ‘‘ get their 
” 
bearings’’ in the pathless forests. 
Raising our eyes we notice the great beauty of 
the patterns which interlacing boughs and twigs 
trace against the sky. Each tree has its own 
beauty, for the form of the bare branches is al- 
most as distinctive as that of the leaves, while 
bark is so characteristic that a hunter or a lumber- 
man can often tell the name of a tree from its 
bark alone. 
By time the dark days of November come the 
trees are all asleep and each is wrapped from its 
topmost twigs to its lowest roots in a slumber-robe of 
Nature’s own weaving, a close tissue of cork-cells. 
Though every plant of the field and every tree 
of the wood is entirely built of cells, these cells 
may differ widely from one another in shape, size, 
and use. 
They may be filled or partly filled with color- 
less jelly, they may contain resin, tannin, mucilage, 
oil, or mineral crystals, or they may be empty. 
They may be many sided, or cylindrical, or spindle- 
shaped, or thread-like, and the thread-like ones 
may be straight or twisted or branched. Some- 
