A B C OF FLORIDA TRUCKING 27 



Since publishing the second edition of this book, I have 

 had my attention called to a new system of irrigation, in- 

 vented and manufactured by Mr. J. P. Campbell, of Jack- 

 sonville, Fla. I have investigated this system very carefully, 

 finding it an excellent one, and I would advise any of my 

 readers to investigate it thoroughly, before deciding which 

 system they will install. 



I have had Mr. Campbell get me up a description of 

 tiie system as follows : 



The Campbell System of Irrigation. 



The Campbell Automatic Irrigation Sprinkler as illus- 

 trated on the back cover of this publication, supplies a de- 

 mand that has existed since the beginning of time for a 

 method of applying water to crops of all kinds in the form 

 of natural rainfall, which result has heretofore been im- 

 possible to obtain. 



PRINCIPLE OF OPERATION. 



As will be seen from the illustration, there are two dis- 

 charge tubes to this machine. The water being forced up 

 through the main tube of machine is discharged through 

 the main tube in the same manner as it would be if dis- 

 charged from a fire nozzle, and is revolved by the reaction 

 produced by the small stream discharged through the tube 

 or nozzle emerging from side of machine. This revolving 

 of the main tube breaks the stream emerging from same 

 up in small drops at a considerable distance from point of 

 discharge, and the discharge from the smaller or driving 

 stream is broken up in the same manner and fills in the 

 space nearest the stand pipe, which is not covered by the 

 discharge from the main stream. In other sprinklers the 



