Bui. 1474, U. S. Department of Agriculture 
Plate 4 
Hr ' ^B BF ^ 
Br «H Bv ^ 
&B^ ' ^Bs5 BbW ^fll 
Various Degrees of Melanose Infection on Grapefruit 
A, Very slight; B, slight; C, medium; D, severe; E, very severe; F, tear-streak pattern 
of melanose, much of which is of the "mud-cake" type 
