76 



granite cropping- out, and a kind of plastic clay in the middle. 

 There were no trees or bushes of any consequence on it, and 

 it >yas wholly worthless for cultiyation. 



Operations were commenced in this lot on the 14th of Ap- 

 ril, 18 GO, and finished in xVugust of the same year, and it was 

 sufficiently drained to commence planting on the 8th of May, 

 of the ijresent year. The drains beino; all duu' to the rio'ht 

 grade, the descent being uniform, any places that might be too 

 soft for the tile to remain in }»lacc were filled with gravel be- 

 fore tlie work of laying the tile began. The main drain was 

 commenced witli 11-2 inch tile — the lot being narrow where 

 it Avas begun — and larger ones were introduced as tlie work 

 progressed, and it was finished with six inch tile. The fall to 

 the main is on an average fiye and thirteen one hundredth in- 

 ches to the Imndred feet, the greatest licing thirteen, and the 

 least three and forty-five one hundredths to a hundred feet, 

 whieli is thought to be as small a fall as is prudent to lay a 

 <lrain. Tlie minor drains Avere laid with 1 1-4, 1 1-2 and 2 

 inch pipe, as the nature of the work seemed to require. The 

 xnain drains wore laid some four inches lower than the minor 

 ones, so as to have a slight fall to the water as it entered it, 

 and care was also taken that none of the minors should 

 enter the niiiin drain opposite each other. The drains were 

 generally placed thirty-three feet apart, sometimes a little 

 imore, and sometimes a little less, as there was more or less 

 water to be taken away. The tile used were the round stone, 

 in sections of about two feet in length, the ends when laid be- 

 ing butted together, and a collar of the same, in the form of a 

 ring, placed around' every joint. This form of tile the engi- 

 neer claims is superior to the sole tile, as the water enters it 

 hv filtration. ^Vc are not prepared to express an opinion a^ 

 to the superiority of one OA'er the other. 



The value of under-draining depends in a great measure u})- 

 on the way in which the work is done, because if there should 

 be a slight defect in the work it may spoil the whole operation. 



