SPRAYING EXPERIMENTS. 



53 



Fig. 4. Twig and leaves of hybrid Prairie Crab apple showing cedar rust. 



Fig. 5. Jonathan apple showing cedar rust on the fruits. 



{see fig. 6, No. 1). With the warm weather of spring, these 

 knots produce threadhke tubes (fig. 6, Nos. 2 and 3), which 

 when wet with rain grow out into large gelatinous tongues of an 



