-' /,' 



I'hntn.. Jiiirnni K iitrniuiJ nri y . Washington, D.C., r.S.A. 

 Fig. 57. — A large " shot-hole" in a prickly pear joint, caused by the fungus iJlo'nsp,irium lunatiim. Texas. 



Photo.. Di.pt. AririrvUiire, Brishanr. 

 Fi^. 58.-'' Black Spot " on 0. ,Ullnui caused by the fungus Fcrlsporiam irn,,hti,. Ant.gna, West Indies. 



