The only important disease of cane cuttings is that due to Thiela- 

 viopsis paradoxa, readily prevented by dipping the seed in Bordeaux 

 mixture. 



Under the heading of minor fungi and diseases seventy-two fungi 

 are listed, together with notes of occurrence, and the symptoms of 

 any diseases they may cause. 



Chlorosis a disease characterized by a yellowing or whitening of 

 the leaves and occurring in certain districts on the south coast, is 

 described together with experiments for its control. Yellow striping 

 is a phenomenon occurring to a very limited extent. 



An account is given of the new disease, or mottling of cane, a 

 phenomenon existing in the western end of the Island. It is charac- 

 terized by a peculiar mottling of the leaves, and later by a cankering 

 of the stalks. All varieties are attacked, and it has occasioned very 

 heaw losses. No certain control measures are known. 



Injuries due to natural agencies, lightning, wind, floods, and 

 drouth are discussed. 



Certain abnormalities are mentioned, but are of little importance. 



A list of the cane fungi of Santo Domingo is appended. 



Certain of the principles of control of cane diseases are briefly 

 outlined. 



LITERATURE CITED. 



{!) AoosTA, JosK Julian, Grandoourt, Grivot, and Stahl, Agustin. 

 1878. Informe so])re la enfermedad de la cana de azucar en el 

 4°. Departamento de la Isla, p. 1-42. San Juan. 



(2) Anon. 



1894. La Maladie de la canne a Maurice. T)i La sucrerie indigene 

 et coloniaU', v. 44, pt. 2, p. :}61-363. 



(3) ASHBY, S. F. 



1915. In report Uept. Agric. Jamaica to Marcli 31, 1915, p. 31. 



(4) BaiAjOV, H. a. 



1913. Report of the prevalence of some pests and diseases in 

 the West Indies during 1912. //( West Indian Bui. v. 13, 

 no. 4, p. 341-342. 



(5) Bancroft, C. K. 



1910. Fungi causing diseases of cultivated plants in the West 

 Indies. West Ind. Bui. v. 10, no. 3, p. 235-269. 



'This list is iiitendod to incliido all ref«i-( nces to eiuie fungi or diseases of Porlo Kico 

 and to siuli other pupiTS :ik Iiave been referred to in the text. No attempt is made to Rive 

 a complete bibliography of the subject, partirularly on those diseases not oeeurrinu' in 

 Porto Rico. 



238 



