You're treading on dangerous ground.
Another plan is to sow in May on dry poor soil, when a crop of small bulbs will be produced; these are to be stored in the usual way, and planted in rich soil about February, on ground made firm by treading, in rows about 1 ft.
However, it is not until we reach Ptolemy that we feel we are treading on firm ground.
The grapes are, after gathering, dusted over with plaster of Paris, and then crushed by treading in a shallow rectangular vessel termed the lagar.
The icy water robbed her of breath and she came up sputtering and treading water.