24 



the more hardy plants only. No matter how perfectly neutrali- 

 zed, this amount of eopper sulphate will burn sume of the plants 

 with more tender folia ge, henee the use of less quantities is 

 necessary, as little as two pounds or. 9 kilos of the sulphate being 

 required for melons, cucumbers, etc. Probably the majority of 

 Bordeaux for Cuban plants will be made with 4 to 5 pounds, 

 of the eopper sulphate to 50 gallons or 190 litres. 



The solution of sulphate of eopper should not be puí in any 

 metal container except it be of eopper. 



AMMONIACAL SOLUTION OF COPPER CARROÑA- 



TE. — Copper carbonate dissolved in ammonia is sometimes used 

 upon plants subjed 1<> fungus attack, the Leaves <>r fruit of which 

 are soon to be harvested and whieh one does not wish to have 

 spotted with the marks of spraying. 



English Metric 



Copper carbonate 6 oz. or 150 grams. 



Ammonia about 3 pints. or j7 litres. 



Water 50 gallons or 190 litres. 



Place the corbonate in a wooden or earthen recepticle and 

 dilute the ammonia to nine pints or 2 litres. Slowly pour the 

 ammonia upon 190 the carbonata, meanwhile stirring rapiclly. 

 When a small portion of the carbonate remanís undissolved 

 (about one fifth) stop pouring in ammonia and dilute to fifty 

 gallons or 190 litres. Copper carbonate may sometimes be be 

 liad upon the market at a price verying from 40 to fi() cents, per 

 pound. When it is impossible to purchase the article. or if one 

 wishes to avoid the excessive cost, it may be prepared at home 

 as f ollows : 



(1) "Dissolve ten pounds or 4.5 kilos of copper sulphate 

 in ten gallons, or 38 litres of water, also twelve pounds or 5.4 

 kilos of carbonate of soda in same quantity of water. When 

 cool, mix the two solutions slowly, stirrring 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 



