214 Commercial Gardening 



Then add milk of lime to the dissolved iron sulphate, passing through a 

 hair sieve or piece of sacking to strain off gritty particles. The paraffin 

 should then be added to the sulphate and lime, and last of all the caustic 

 soda. The mixture should be well agitated during application, and if 

 applied hot so much the better. 



III. SELF-BOILING LIME-SULPHUR-SODA WASH. Formula: 



Lime 3 Ib. 



Sulphur (flowers of) 3 



Caustic soda 1 



Soft soap ... ... ... ... ... ... 1 



Water ... 10 gal. 



Make the sulphur into a thin paste and pour over the lime; then boil for 

 a quarter of an hour and keep stirred, and add the caustic soda. Continue 

 to boil for some time, and then add dissolved soap and full quantity of 

 water. 



IV. FOR APPLE SUCKER AND PLUM APHIS. Formula: 



Lime 1-1| cwt. 



Waterglass ... ... ... ... ... 5 Ib. 



Salt 30-40 Ib. 



Water 100 gal. 



Slake quicklime slowly, and then mix with water in which the salt hap 

 been dissolved. Strain through fine sacking, and add dissolved waterglass 

 which makes wash adhere better. This wash may be used up to the time 

 of the buds bursting. 



6. Copper Sulphate (Bluestone, Blue Vitriol, Blue Copperas). The 

 purest 98-per-cent copper sulphate should be used, as cheaper brands 

 contain impurities, chiefly iron sulphate, which may injure the foliage. 

 One pound to 10 gal. water may be used as a winter wash. 



7. Copper Sulphate and Washing Soda (Burgundy Mixture). 

 Formula: 



Copper sulphate (98 per cent) ... ... ... 2 Ib. 



Washing soda (pure) ... ... ... ... 2J Ib. 



Water 10 gal. 



Dissolve copper sulphate in 9 gal. of water in a wooden vessel, and the 

 washing soda in 1 gal. water. Pour the dissolved soda into the copper 

 solution, and stir constantly. If blue litmus paper turns red in the solution 

 add more soda while stirring, until the litmus remains blue. This mixture 

 is found superior to Bordeaux mixture for spraying Potatoes, and is more 

 easily prepared and applied. 



8. Eau Celeste. This is made by dissolving 2 Ib. copper sulphate in 

 6 to 8 gal. of water in an earthen or wooden vessel, and then adding 1 qt. 

 of ammonia and mixing with 50 to 60 gal. water. 



Modified " Eau Celeste " is made by dissolving 4 Ib. copper sulphate 



