Memoib lot'. 



PLATE I I 



LPPLE SHOOTS WILTED AFTEK BEING INSERTED IV BLIGHTED PEAK JUICE AND 



B \( l l 1:1 \l- OOZE <>\ APPLE TWIG 



1. Left beaker, center, apple si | wilted in untreated juice from blighted pears; 



.it side, apple shool wilted in the diffusate outside of the collodion membrane. Righl 

 beaker, arrangemenl similar, bul juice frozen to 183° C. The photographs were 

 taken 1% hours after the twigs were introduced into the l i < i n i < l 



2, At left, apple twig in juice from blighted pears to which 1 per cenl of toluol 

 had been added; at center, apple twig in juice from healthy green pears to which 



1 per cenl of toluol had i □ added; al right, apple twig in 1 per cenl of toluol in 



dist died water 



:;, "Hold-over" canker on apple twig 5/16 inch in diameter; receni oozing is 

 Shown at the cross mark 



