19 



The cost of 600 gallons of the different spraying solutions just 

 described is, in the far West, as follows: 



Paris green: 



Paris green, 4 pounds at 25 cents $1. 00 



Lime, 8 pounds 04 



Total 1 . 04 



Scheele^s green: 



Scheele's green, 4 jjounds at 12j cents 50 



Lime, 8 pounds 04 



Total 54 



Lhne arsenite: 



White arsenic, IJ pounds at 10 cents 15 



Lime, 3 pounds 015 



Additional lime, 1 2 pounds 06 



Total 225 



Lime arsenite tmth soda: 



White arsenic, IJ pounds at 10 cents 15 



Salsoda, 6 pounds at Ij cents 09 



Additional lime, 6 pounds 03 



Total 27 



Lead arsenate: 



Arsenate of soda, 2j pounds at 10 cents 25 



Acetate of lead, 6 pounds at 12 cents ' .72 



Total 97 



Prepared lead arsenate, 36 pounds at 20 cents $7. 20 



Any fruit grower can estimate what these spraying solutions will 

 cost him by finding what these chemicals cost in his section. The cost 

 of the prepared lead arsenate is prohibitive for a commercial orchard, 

 but in case of a home orchard of but few trees it saves a large amount 

 of labor and is much used in such cases. 



Cost of spraying. 



The cost of spraying is practically nothing when compared with the 

 benefits derived. As in other lines of work, exact methods and cutting 

 off ever}" unnecessary expense will reduce the cost considerabl3^ The 

 estimates given herein are based on data obtained in the field when 

 spraying operations were in progress. The spraying of 1,000 trees 

 once is taken as a basis for calculations under Western conditions. 

 In localities where labor and material are cheaper the cost will be con- 

 siderably lower. 



