332 Report of tpie Horticultural Department of the 



be made strong enough to be efficient against fungi without being in- 

 jurious to fohage. For the purposes for which this is indicated we 

 prefer eau celeste and soap or amnioniacal copper carbonate and soap 

 or the soda-Hme bordeaux. (See p. 329.) 



See also under " dry bordeaux dust " (p. 329). 



Eau Celeste and Soap. 



Copper sulphate i pound. 



Ammonia (26° Beaume) 3 pints. 



Soap I pound. 



Water 50 gallons. 



Dissolve the copper sulphate in 40 gallons of water and add the 

 ammonia. In another vessel dissolve the soap in 10 gallons of water, 

 mix the two solutions. This is not so effective a treatment as bor- 

 deaux mixture. It has proved beneficial for spraying when fruit is 

 ripening and discoloration by a spray mixture is undesirable. 



Ammoniacal Copper Carbonate and Soap. 



Copper carbonate 6 ounces. 



Ammonia (26° Beaume) about 3 pints. 



Soap " I pound. 



Water 50 gallons. 



Dissolve the copper carbonate in the ammonia, somewhat diluted 

 with water, using no more ammonia than is necessary barely to dis- 

 solve the copper carbonate. Put this into 40 gallons of water. Dis- 

 solve the soap and add to the solution of copper carbonate. The 

 solution loses strength on standing in open vessels but may be kept 

 indefinitely in stoppered bottles. 



Copper carbonate may be made at home as follows : " Dissolve 10 

 pounds copper sulphate in 10 gallons of water, also 12 pounds 

 carbonate of soda in the same quantity of water. When cool, mix 

 the two solutions slowly, stirring well. Allow the mixture to stand 

 twelve hours and settle, after which pour off the liquid. Add the 

 same quantity of water as before, stir and allow to stand the same 



