46 



IRRIGATION. 



boundary of the field or garden. The water flowing from 

 these lateral canals takes the direction shown by the 

 arrow. A more elaborate arrangement will be suitable 

 to market-farms, where a variety of crops, each needing 

 especial treatment, are grown. (Such a one is shown in 



. 14. ARRANGEMENT FOB A MARKET FARM. 



fig. 14.) In this the water is supplied by one or two 

 canals, A, B and A, C, as may be consistent with the slope 

 of the ground. A road, d, d, is laid out at one side of 

 the plot, crossing the supply canal or feeder by a culvert 

 at a, a portion of the ground, e, e, being retained for cul- 

 tivation, leaving room to turn a cart or wagon at each 

 end of it. The water is turned from the main supply 

 canal, A, B, into the main distributing canal A, 0. The 



