PLATE V. 



Fk;. 10. — Sliowiiij; 

 ridge on elin tree 

 caused by feeble 

 ligh t n i ug dis- 

 ehiirge. 



Fi(i. 1-2. — Maple showing eflfects of earth dis- 

 charges (lightning), causing sphttingof the 

 trunk ;nid death of linil)S. 



