Photo., Dcpt. Agrii-uUure, Briahane. 

 Fig. 59. — Joint of 0. diUenii showing .stage.s of the " Zone Spot Disease." Note the concentric areas. 



Antigua, West Indies. 



■*^**^ 



Plifjfo.. ]h pf. Aiii iiiilhin . Brisbane. 



r r, a 1. -r,- „o^" nil n illlliiiii, shniviiig destniction of tlio superficial 



Fio- 60, ^Later stage of ■■ Zone Spot Disease on U- 'niiniii, 

 " tissues in progress. Antigua. 



