Fig. 34. OPEN GROWN PINES. 

 White on left, Yellow on right. Both trunks exiurrent and developed in same envir- 

 oument. Difference of form is due to inherent qualities. One tapers, with per- 

 sistent lateral branches; the other with little taper and few branches. 



Fig 35. OPEN GROWN AMERICAN ELM. 

 Its trunk branches near the base and then repeatedly subdivides, 

 known as a deliquescent trunk. 



Such a trunk is 



