6 



Put chis paste inte a convenient barrel or large tub and 

 cover with plenty of water. It will keep as long as desired 

 in this way, but if it dries it is useless for making Bordeaux. 

 The lime should be secured and slaked before the seedbeds 

 are sown, for it may be wanted at an} r time after the seed 

 begin to grow. 



A suitable quantity ofcopper sulfate should be secured 

 also and stored in a dry place in a securely closed box, as it 

 is a poison. 



A test solution should be prepared as follows: — get 10 

 cents worth of yellow prusiate of potash (potassium ierro 

 cy anide), put in into a clean bottle of convenient size (about 

 4oz.) and add about 10 times as much clean water ascyanide. 

 Label this " Poison. Bordeaux test solution," and keep in 

 a safe place. 



Have a wooden 50 gallón barrel and a tub or other 

 barrel ready for making the Bordeaux. 



Having the materials ready they can be used at amy 

 time and they will not deteriórate if the lime does not get 

 dry. 



At the first sign of damping off in the seedbeds, prepare 

 the Bordeaux as follows: — Wash the barrel whieh is to 

 contain the Bordeaux and fill it half full of clean water. 

 Take 6 lbs. ofcopper sulfate and tie it in a piece of sack and 

 suspend just below the surface of the water In a few hours 

 all the copper sulfate will be dissolved. If hot water is used 

 it will dissolve very quickly in a smaller amount of water. 



Now take about 15 lbs. of the thick lime paste from the 

 barrel in which it is kept and put it in a tub. Add 20gallons 

 of water and stir it up to a smooth lime milk. 



Dip the lime milk out of the tub and pour it slowly 

 into the copper sulfate solution, stirring rapidly. When the 

 color becomes adeepblue, add afewdrops ofthe test solution 

 to the mixture. 



Ifa dark brown color ,is formed, more lime is needed. 

 Continué adding lime until no brown color is formed on 

 adding the test solution. When this point is reached the Bor- 

 deaux isneutralized<but tobe entirely safe add one half more 



