Dissolve the sulphate of copper in 2 gallons of hot water, iu another 

 vessel dissolve the carbonate of soda in a similar maimer ; mix the two 

 solutions, and when all chemical reaction has ceased add rhe ammonia; 

 then dilute to 22 gallons. 



6. Solution of ammoniacal carbonate of copper. 



(Progres Agricole et Viticole, August, 1887, p. 114; Etc.) 

 Prepared as follows: Into a vessel having a capacity of two quarts 

 or more pour one quart of ammonia (strength 22° Baurue), add 3 

 ounces carbonate of copper, stir rapidly for a moment and the carbonate 

 of copper will dissolve in the ammonia, forming a very clear liquid. 

 The concentrated liquid thus prepared may be kept indefinitely. For 

 use, dilute to 22 gallons. 

 For peronospora of the vine. 



7. Sulphate of iron. 



(La Vigue Aniericaiue, June, 1884, p. 181 ; Bull. 2, Bot. Div. U. S. Dept. of 

 Agr., 1886, pp. 38 and 121 ; Report of Mycologist, U. S. Dept. of Agr., 1886, 

 p. 114; Etc) 



Simple solution in water 4 to 8 pounds to the gallon, to be used only 

 as a wash. 



For anthracnose. 



8. Chloride of iron. 



According to Mature (vol. xxxvii) a very dilute solution of the above- 

 named substance has been used with success in combating the coffee 

 disease due to Hemileia vdstatrix. This fungus is a member of the group 

 Ureclinece (rusts), and it is said that the chloride of iron not only cures 

 the disease, but also prevents its recurrence. The solution is applied 

 to the under surface of the leaves by means of a pulverizator or spray- 

 ing apparatus. Its sticky nature causes it to adhere for two months. 



9. Skawinski's sulphate of iron and sulphuric acid solution. 



(Traitement des Maladies de la Vigue, Viala et Ferrtfuillat, 1888, p. 84.) 



Sulphate of iron .„•,.' pounds . . 110 



Sulphuric acid (53°) pints . . 1 J 



Warm water gallons . . 22 



" In order to avoid sputtering it is necessary to be very careful in 

 pouring the sulphuric acid upon the crystals of iron sulphate, and not 

 to add the warm water until after this operation. Besides, it is best to 

 use sulphuric acid of only 53° Beauine, because it is less dangerous to 

 handle. I am careful to use this mixture the same day and while warm, 

 for when it becomes cold the sulphate of iron crystalizes and the solu- 

 tion has no longer the strength necessary in order to be efficacious." 



10. Sulphide of potassium, Liver of sulphur. 



(Garden 1885, p. 379; Gardeners' Chronicle, 1885, Vol. XXIII. , pp. 276, 352, 

 378; Vol. XXIV., p. 379; Bull. 2, Bot." Div. U. S. Dept. of Agr., 1886, p. 

 67; Eeport of the Mycologist U. S. Dept. of Agr., 1886, p. 121; sixth re- 

 port of the New York Experiment Station 1887. pp. 348, 349, 350 ; Etc. 



Simple solution in water, £ to 1 ounce to the gallon. 



