78 



GLIMPSES IX TO PLA XT-LIFE 



pieces of the sycamore, which are due to the cleav- 

 age being both vertical and horizontal, the hexa- 

 gonal shape of the divisions of the Scotch fir, the 

 rugged bark of the Turkey oak, the sycamore and 

 other species. 



SXAKK-HAKK MAl'I.K 



Where a woodi^ccker or a nuthatch has bored 

 a hole into the li\ing wood oC a tree-stem, it is 

 interesting to watch how the injury is repaired. 

 New bark begins to form at the edges of the 

 wound, and to this a la}-er is added each year, until 



