THE MONTHLY BULLETIN. 



301 



ients at the start, but subsequent stirring' is necessary if the wash is 

 cooked by direct heat in kettles. After the wash has been prepared it 

 must be strained throuoh a fine sieve as it is being run into the spray 



tank. 



COMMERCIAL LIME-SULPHUR. 



The commercial spray is a perfectly clear liquid, easy to handle and 

 needing only to be properly diluted for use. It is usually sold in barrel 

 lots. There are two common brands upon the market in California, 

 sold under the trade names. "Rex" and "Ortho," though there are 

 other sprays equally as good manufactured elsewhere. 



For spraying scale insects on dormant, deciduous fruit trees in the 

 winter, the commercial lime-sulphur should be diluted one to nine of 

 water. It is advisable to spray just as early in the winter, after the 

 leaves have fallen, as possible. If there is to be no confusion relative 

 to the proper dilution of the commercial sprays a Baume hydrometer 

 should be employed. For winter spraying the following table by W. C. 

 O 'Kane is of great value : 



Reading of hydrnnieter in degrees Baume. 



Number of gallons of water 



to one gallon of the 



concentrate. 



35 

 34 

 33 

 32 

 31 

 30 

 29 

 ,28 

 27 

 26 



9 



81 



8i 



8 



7i 



7k 



61 



6^ 



6 



51 



For red spider on citrus trees these products are applied as a two 

 per cent solution. 



LIME-SULPHUR AND FLOUR PASTE. 



For spraying trees in foliage and tender plants a lime-sulphur flour 

 paste spray has given remarkably good results. The following formulie 

 are recommended : 

 No. 1. 



Water 200 gallons 



Flour pa.ste. S pounds flour in 8 gallons water 



Sublimed sulphur 10 pounds 



Lime-sulphur solution 2^ gallons 



The flour is first made into a thin paste by adding one pound to 



