84 VEGETABLE GARDENING 



work, making the rounds of the pipe lines as often as 

 may be necessary. If watering is attended to systemati- 

 cally, it is probably never desirable to apply more than 

 an inch of water at a time. The numerous bulletins is- 

 sued by the manufacturers of the drills, nozzles and 

 unions give additional details concerning the installation 

 and operation of this system. 



