REPORT ON THE IMPROVEMENT OF MEADOW PASTURAGE. 443 



out flooding the leens, on the aqueduct principle — that is to say, 

 embanked on each side, and that the whole weight of water, con- 

 fined to one channel, would make the most rapid discharge, an 

 outfall for the surface water of the ground on each side having 

 to he provided, as afterwards explained. The contractor and the 

 reporter made a remit to Mr David Smith, C.E., for ascertaining 

 the additional cost of altering the course of the remainder of the 

 channel and embanking, that the work might be executed as 

 above. He awarded — 



Cost of altering course of channel, . . . L.32 12 6 



Cost of embankment, . . . . . 24 15 



L.57 7 6 

 And it was done accordingly. 



Eeference is made to the annexed copy of plan and section. 

 The section shows, by a cross line, where the extraordinary 

 Hood level of the loch strikes Lamsclale leen, and consequently 

 the extent to which the leen is affected by the flooding of the 

 loch. In 1864 the channel was straightened, and made 50 feet 

 wide up past the cross line, and thereby the flood-level of the 

 leen at that point was reduced almost to that of the loch. The 

 - distance from the cross line to the point B, at upper end of 

 flooding ground, is 57 chains. The section shows a rise on 

 the surface of the ground, above the extraordinary flood-level 

 of the loch of 3 feet 8 inches on this distance. An embankment, 

 4 feet high, has been added, which makes 7 feet 8 inches at the 

 point B, giving more than 1| inch of fall per chain. Since 

 Mr Tait reported on 13th April 1866, the embankment has been 

 carried clown from C 3 to C 1, and the loops of the old channel 

 at C 3 and C 2 filled up, the water being thereby confined to the 

 new channel, 50 feet wide. This was done to restrain the whole 

 weight of the water to one channel, on account of sand deposits 

 beginning to be formed where the water diverted into the old 

 channel. The sand has since been carried completely away. 



An embankment commences at C 1, and is carried up to high 

 ground at D, on the east side of new channel. This embankment 

 secures Lamsdale leen and lower portion of Torran leens from 

 the flood-water confined thereby to the new channel. From C 3 

 to C 2, a cut carries down the surface water which falls into the 

 new channel at C 1. Lamsdale leen, which is still affected by 

 want of discharge for the flood-water from the mountain, has 

 been enclosed by a wire fence along with the tumulus, and 

 makes a park in lambing time, and is saved for hay afterwards. 

 Another embankment commences from the high ground at H, 

 and is carried round the west side of the new channel to the 

 high ground at F. A catch-water ditch conveys the hill water 

 into the new channel at E below H, and into the river above the 



