75 IRRIGATION. 



the end of 18. (The main furrow is a little deeper than 

 the entrance to the laterals. ) Here it will overflow the 

 land lying below so much of the lateral as is beyond y. 

 Then a gate should be set at y, and kept there until the 

 land below the lateral between that point and z has been 

 sufficiently flooded. Then remove the gate to z. When 

 all the land below lateral 18 has had its supply, set a gate 

 in the main just below 17, and repeat the process with 

 that. When the south side of the farm has been com- 

 pleted, the gate is taken from the main and the water 

 allowed to flow to the end of No. 9. 



"Nos. 1, 2, 10, and 11 can be flushed only from outlets 

 a and b. All the others are low enough for c. 



"Of course, any portion of the land may be flooded at 

 pleasure, the directions above being given only as an 

 illustration." 



The scope for the employment of such methods as 

 these suggested in this chapter is far from narrow. The 

 profitable employment of liquid manure upon gardens 

 and small farms upon which the crops grown are of high 

 comparative value, cannot be doubted. It remains only 

 that the lead in introducing it be taken by some enter- 

 prising but cautious man, in each neighborhood, whose 

 success would stimulate hundreds of others to follow his 

 example. It is probably too soon to more than hint to- 

 wards the use of liquid manure upon farms in this coun- 

 try, or the utilization of the sewage matter of towns and 

 cities. This can only be done with profit when the high 

 value of lands bears some proportion to the cost of the 

 necessary machinery. But upon gardens, especially mar- 

 ket gardens, and upon highly cultivated farms where 

 heavy fodder crops are grown, and the soil is abundantly 

 manured, and where the closest economy in the saving 

 and use of manure is practiced, much may be done in this 

 way. The author has had practical experience in the use 

 of liquid manure in gardens, and in growing fodder 



