6 



The question of ingredients and proper spraying apparatus 

 is a very important one. Failure is in the majority of cases 

 due to poor material or insufficient apparatus. A cheap pump, 

 which soon becomes useless, is always more expensive than a 

 well-made outfit at whatever cost. For field spraying where 

 the ground is rocky and uneven, a compressed-air knapsack 

 sprayer will be found suitable, while on level land, which will 

 permit a wagon passing through the rows, a barrel outfit will 

 be found the more desirable. These are points which only a 

 knowledge of local conditions will permit definite advic e 

 being given. Further information will be gladly given. Ad- 

 dress Mr. Jared G. Smith, Director, Hawaii Experiment Sta- 

 tion, Honolulu, Hawaii. 



Honolulu, August 11, 1904. 



