514 



BACTERIAL DISEASES OF PLANTS 



;^illl 



Yia 386 —Young vigorous shoot of Morus alba showing lenticel proliferations 

 due to closure of the lenticels by Squibb's petrolatum: [I) and (2j. Two treated 

 portions-2 was taken a foot above I. (Time 13 days; 2d treatment on Ilth 

 day but not necessary.; Exposure begun March 5, 1918. Cut and photographed, 

 March IS. X 5. (3) Untreated part, above 2. (4) Untreated part, below 1. 



