+
i
i
a A · Q 
'1 *2
t l fl. 
1. ,  r
6 * ' r§ ' ' ’   » _{r€rj;§;_·  2 {4 '      '·
; r ll'}? are    —        3    .
0     I        ``     `    l  
Y" “’  `*          
r        V  * or l   ‘   *    ·
  `   ~·*·’ ,:       * ’ 2 A   V ‘ »      
      ·   *           
1 Elf" l   M o r   ,,o ?   ; 
j _   `,  pv  5     p  =,  V     3
g'          
FIG. 14. The Germ (Bacillus amylovorus) of Apple Twig-  at
blight. Magniiied about 2000 diameters. Photographed from the  
l!l1CI`OSCOp€.