Natural Grafts at the Petrified Forest 
This tree is a live oak growing from the soil overlying 
the petrifled forest. It is of peculiar interest because its 
Lranches form two natural arches through having grown together, con- 
stituting natural grafts. We not infrequently scc the ‘trunks of 
trees thus united, but such union of branches is very unusual. 
