FOEMULAS. 187 



and the two may be readily combined in any desired pro- 

 portion. 



For application to peach foliage (for brown rot, leaf 

 curl, etc) a 3-9-50 mixture (3 pounds of bluestone, 9 

 pounds lime and 50 gallons of water) must be used in- 

 stead of the normal 4-6-50 formula. Peach foliage is 

 extremely sensitive. When Paris Green is combined with 

 the Bordeaux (4 ozs. to 50 gallons) it should not be stirred 

 in until just before spraying. 



10. CoppEE Sulphate. 



Copper Sulphate (bluestone) 4 ozs. 



Water 50 gals. 



For the initial spraying before foliage is set or for win- 

 ter use ; also when ground is to be drenched — as in antici- 

 pation of the Florida blight of the tomato. 



11. Ammoniacal Ooppek Caebonate. 



Copper Carbonate 6 ozs. 



Aqua Ammonia (strong, 26 degs.) .... 2 qts. 



Water , 50 gals. 



Make a paste of the copper carbonate with water, dilute 

 the ammonia with 1% gallons of water and stir in the 

 paste until thoroughly dissolved, making 2 gallons, stock 

 solution. Keep the stock solution in a glass vessel stopped 

 with glass or rubber, and on using dilute each quart with 

 6 gallons of water. 



12. FoBMALDEHTDE (Formalin) — ^1 pint to 30 gallons 

 of water. 



For Potato Scab, and for purposes of general disinfec- 



