As the river daily fell, of course the water in the canals fell too, and since they were never dug deep enough to draw water from the very bottom of the river, they occasionally ran dry altogether in the month of June, when the river was at its lowest, and when, being the month of greatest heat, water was more than ever necessary for the cotton crop. Thus large tracts which had been sown, irrigated, weeded and nurtured for perhaps three months perished in the fourth, while all the time the precious Nile water was flowing useless to the sea.
It is further significant that, in the Chillingham herd, dark-coloured calves, which are weeded out, make their appearance from time to time.
In four reprints, 1519, 1522, 1527, 1 535, Erasmus gradually weeded out many of the typographical errors of his first edition, but the text remained essentially such as he had first printed it.
After sowing, the land is harrowed, and the young plants are hoed and weeded, chiefly by women and children, from early spring until the time of flowering.