136 



IRRIGATION FARMING. 



FIG. 35 — SIDE VIEW OF SMALL IRON FLUME. 



the canon again, the water is condudled through an 

 arc pipe-line 2,000 feet in length. There is nearly one 

 and a half miles of this pipe and flume, and so well 

 was the work done that when the water was turned in 

 to the full capacity scarcely a leak was seen anywhere. 

 Iron Flumes. — One of the greatest objedlions to 

 the use of wooden irrigating flumes is the alternate 



shrinking and 

 swelling of the 

 wood and the con- 

 sequent warping 

 and distortion of 

 the strudlures. To 

 overcome this dif- 

 ficulty, and at the 

 same time to provide a durable substitute, easy of trans- 

 portation and eredlion, M. H. Laybourn, of New 

 Windsor, Colorado, has designed and patented an iron 

 flume, which is illustrated herewith. 



Galvanized iron is used for the trough of the flume, 

 which is supported in va- 

 rious ways, according to 

 the exigencies of the case, 

 but generally by means of 

 cast-iron brackets placed 

 on timber supports. Fig. 

 35 shows a small flume, 

 supported on single posts. 

 In this, as in other cases, 

 the upper edge is stiffened 

 by means of a board or 

 plank, which also provides 



FIG. 36 — END VIEW OF SMALL 

 IRON FLUME. 



