APPENDIX 307 



II. BORDEAUX MIXTURE 

 For blight, mold, rot, scab, and all other fungous diseases of plants in foliage. 



Copper sulphate . 6 Ib. 



Unslacked lime 4 Ib. 



Water .......... 50 gal. 



For peaches, plums, and cherries double the quantity of water. Dissolve the 

 copper sulphate in hot water in an earthen or wooden vessel, and then dilute it to 

 25 gallons. Slack the lime in a wooden vessel with boiling water, slowly and care- 

 fully so as to form a smooth paste. Dilute it to 25 gallons. When cool, mix with the 

 copper-sulphate solution, stirring thoroughly. 



III. AMMONIACAL COPPER CARBONATE 



For fungous diseases of ripening fruit 

 Copper carbonate . . . . , . . . 5 oz. 



Ammonia, 26% . . . . . . . .3 pt. 



Water . . . . 50 gal. 



This mixture does not stain nor roughen ripening fruit. Make the copper carbon- 

 ate into a paste with i pints of water. Dilute the ammonia with i| gallons of water 

 and dissolve the paste in it. This stock solution can be kept in glass-stoppered bottles 

 and diluted as wanted, by adding 6 gallons of water to each quart of the solution. 



IV. FORMALIN 



For smut and scab 

 Formalin . : . . , , t , . I pt. 



Water for scab 30 gal. 



Water for smut ........ 50 gal. 



Mix and moisten thoroughly the grain and potatoes to be used for seed, just be- 

 fore planting. Put the potatoes in a bag and soak for two hours in the preparation. 

 Grain should be soaked twenty minutes and then spread so as to dry without heating. 



INSECTICIDES 

 I. PARIS GREEN 

 For chewing insects on plants, such as codling-moth larvae, potato beetles, etc. 



Paris green I Ib. 



Water 150 to 300 gal. 



For use on trees in foliage, especially fruit trees, add I Ib. of unslacked lime. 

 Paris green is a poison, and should be used with care. It should be mixed 

 to a thin paste with water, diluted to the required amount,"- and kept well stirred. 

 A dry preparation is made by mixing one pound of Paris green with from 20 to 

 50 Ib. of flour gypsum, or air-slacked lime. This should be mixed thoroughly and 

 dusted on plants, preferably while, they are wet with rain or dew, 



