10 



For downy mildew. For downy mildew and black rot of the grape. 

 For mildew and anthracnose. 



23. Podechard's powder. 



(Bull. Soc, Agr. Herault, France, 1886, p. 59; La Vigue AnieYicaine, June, 



1886, p. 193; Bull. 2, Bot. Div. U. S. Dept. of Agr., Nov., 1886, pp. 80, Si 



82; Report of the Mycologist U. 8. Dept. of Agr., 1886, p. 101; Le De"- 



veloppemeat c-t le Traitement <lu Mildiou el de L'Anthracnose, Millarde^j 



Feb., 1887 ; Etc. | 



Pounds. 



Air-slaked lime L'25 



Sulphate of copper 45 



Flowers of sulphur 20 



Ashes 30 



Dissolve the sulphate of copper in the water; when thoroughly dis- 

 solved pour the solution upon the lime, which is surrounded by the 

 ashes to keep the liquid from spreading ; after twenty-four hours add 

 the sulphur, thoroughly mix the compound, ashes and all, and when 

 dry sift through a sieve with meshes of one-eighth of one inch. This 

 preparation may be made several months before it is required for use. 



For the downy mildew of the vine. For the treatment of mildew and 

 anthracnose. 



Washington, D. C, April 25, 1888. 



