9 



in the strength as applied above could be used to advantage, and at 

 a cost ot about 1 cent per tree each application, or 5 cents for the 

 season. This is an outside estimate even for large trees. 



It is noteworthy to mention a fact which has attracted the atten. 

 tion of other investigators, viz., that the older leaves seem to be 

 more sensitive to injury from most fungicides and insecticides, than 

 the young and growing leaves. The later applications emphasized 

 this observation. 



The beginning of the work was unavoidably delayed until 14th 

 June when the fruit was well formed, and in many cases had begun 

 to show signs of the disease. There is no doubt had the treatment 

 been commenced two or three weeks earlier the results would have 

 been more favourable. 



The most important point brought out in this work is that in 

 connection with the use of the carbonate of copper in simple 

 mixture or suspension with water. 



This has been tried but one year, yet the results are sufficiently 

 marked to lead me to ask that each fruit-grower who takes up this 

 work should make a special test on at least a few trees, using the 

 carbonate of copper in suspension. 



Fungicides recojimended. 

 The following mixtures are recommended : — 

 1. Ammoniacal copper carbonate — 



Carbonate of copper 8 oz. 



Ammonia 1 gal. 



Water 100 gals. 



How TO Prepare. 



In an ordinarj- vessel capable of holding a gallon or* more, put 2 

 ounces of carbonate of copper and 1 quart of ammonia (ask your 

 druggist for strong ammonia) ; when the copper is completely 

 dissolved pour the mixture into a barrel and add 25 gallons of 

 water. The solution is then ready for use. 



Medium sized trees will take about 1 gallon each, and large trees 

 from 1 to 2 gallons. A convenient method when using this formula 

 is to prepare the carbonate of copper by dissolving it in the ammonia 

 at once in the full quantity ordered above, and keeping it ready for 

 use stored away in ordinary quart glass jai-s ; these to be diluted 

 with water as needed. 



