" REVERSION " IN BLACK CURRANTS. 



FIGS. 1 to 7. Progressive stages of the disease, from a normal leaf in 

 Fig. 1, to the oak-leaved form in Fig. 7. The main veins are marked 

 A, B, C, D, E, and the sub-main veins, which spring from C and 

 are the important ones for purposes of identification, are indicated 

 by numbers. ,., 



fi7 1 



