U. S. DEPARTMENT OI' ACiRICULTURE. 



BUREAU OF PLANT INDUSTRY -BULLETIN NO. 60. 



B. T. liAI.I.oWAV, Oiitfiif llintaH. 



A SOFT R( )T OF. THE CALLA \A\.\ 



BY 



O.Q: TOWNSEND, Patiiolocist. 



VEGETABLE PATHOLOGICAL AND PHYSIOLOGICAL 

 INVESTIGATIONS. 



IssiTKU June 30, 1904. 



WASHINGTON: 



GOVKKXMENT PRINTIX(i OFFIOK 

 1904. 



