Dec., I860.] 



ELLIOTT SOCIETY. 



41 



the soil necessary to the good growth of the plant when the fields are inun- 

 dated ; a good ' ' dry growth, " during which there is thorough oxygenation of 

 the soil, being followed by a fine ' ' water growth " when the field is flowed. 



For the purpose of regulating this flowing and draining, a Trunk is ' ' buried " 

 in each field, in a suitable part of the embankment next the river, opposite to, 

 and in a line with, one of the large ditches. This trunk is set deep enough for 

 its bottom to be a little below low-water mark, and is constructed in the follow- 

 ing manner : two Sides, each 2 ft. wide, 4 inches thick, and 22 ft. long, are 

 connected together, at a distance of 3 to 6 ft. , by 2 in. plank running trans- 

 versely, and forming the top and bottom of the trimk. A rectangular Culvert 

 or Sluice is thus formed, of a capacity suited to the size of the field to be 



EICE-FIELD TEUNK. 



drained, from 6 to 12 square feet of area of transverse section. Fitting closely 



to the ends of this culvert are the Faces, which are formed, each, of four pieces 



VOL. n. 6 rnblishcd Oct., 1885. 



