BACTERIAL DISEASES OF PLANTS 



Fig. 385— tI. Under-surface of a young green branch of the common orna- 

 mental rubber tree {Ficus elastica) showing outgrowths from lenticels 8 days after 

 painting it with Squibb's petrolatum. On the 5th day the treatment was re- 

 peated. Nat. size, nearly. For section at X see B. 



B. Proliferation (hyperplasia) of semi-asphyxiated lenticel of Ficus elastica. 



