Garden Irrigation 389 



on a large scale, fields are furrowed every 6 feet 

 with a double shovel plow. The seeds are planted 

 in the edge of the ridge away from the furrows, and 

 the soil watered through the furrow only, by lateral 

 capillary flow, great care being taken to avoid flood- 

 ing the surface. Cultivation follows each irrigation 

 after the plants are up until the vines become too 

 large, but watering must be kept up about once in 

 ten days until the crop is mature. 



Fig. 117. Diagram of cabbage irrigation at Gennevilliers, near Paris. 



Another system of irrigating gardens is repre- 

 sented in Fig. 119, where the rows are hilled, leav- 

 ing shallow furrows between them, but arranged so 

 that a stream of water can be led across the ends 

 .and turned into them one by one. The water is led 

 to the lower rows down the middle furrow, and with 

 a broad irrigating hoe, having a blade 12 inches 



