Where _y_ is the depth of water absorbed in feet and _x_ is the time in hours. The observations extended over eight days. Denoting by _c_ the depth of water in feet absorbed in one hour, it was found that on a field on which no rain had fallen for two months, _c_ was ·04 to ·05 but on the second watering of the crop about a month later _c_ was ·02 to ·03 and about the same on a third watering. It was found that at the first commencement the rate of absorption was much affected by the state of the surface of the ground but that the effect was only temporary. The losses were found to be as follows: +------+--------------+---------------+ | DAY. |LOSS PER DAY. | LOSS PER HOUR.| | | | (_c_) | +------+--------------+---------------+ | | Feet. | Feet. | | 1st | 1·36 | ·057 | | 2nd | 1·13 | ·047 | | 3rd | 1·07 | ·046 | | 4th | 1·02 | ·043 | | 5th | ·96 | ·041 | | 6th | ·90 | ·037 | | 7th | ·80 | ·033 | | 8th | ·77 | ·032 | | | Total 8·01 | | +------+--------------+---------------+ In the eight days the total loss was almost exactly eight feet. The losses by absorption in the various channels of certain canals has been estimated to be as follows:-- ---------------+-------+----------+-------+-----------+--------------- Channel. | Nature|Mean depth| Value | Loss per | Remarks. | of | of water | of | Million | | soil. | in | (_c_) |square feet| | | Channel.| | of wetted | | | | | surface. | ---------------+-------+----------+-------+-----------+--------------- | | Feet. | | c. ft. | | | | | per sec. | Main Line Upper|Shingle| 6 |·035 | 9·7 }| Bari Doab Canal|and | | | }| |Sandy | | | }| |Soil | | | }| | | | | }|Fairly reliable Main Line |Sandy | 7 | | 9·0 }|estimates based Sirhind Canal |Soil | | | }|on discharge | | | | }|observations. Branches Upper |Loam | |·0079 | 2·2 }| Bari Doab Canal| | | | }| | | | | }| Branches |Sandy | | | 5·2 }| Sirhind Canal |Soil | | | }| | | | | | Distributaries |Loam | |·012[4]|2·3 to 4·4}| Upper Bari | | | | (average }|