Read it through once

As usual, Mrs Durbeyfield was balanced on one foot beside the tub, the other being engaged in the aforesaid business of rocking her youngest child. The cradle-rockers had done hard duty for so many years, under the weight of so many children, on that flagstone floor, that they were worn nearly flat, in consequence of which a huge jerk accompanied each swing of the cot, flinging the baby from side to side like a weaver’s shuttle, as Mrs Durbeyfield, excited by her song, trod the rocker with all the spring that was left in her after a long day’s seething in the suds.