With this line they mark out the course of the wall, and it is called, by contraction,
‘pomerium,’ that is
or next the wall.
And where they purposed to put in a gate, there they took the share out of the ground, lifted the plough over, and left a vacant space. And this is the reason why they regard all the wall as sacred except the gates; but if they held the gates sacred, it would not be possible, without religious scruples, to bring into and send out of the city things which are necessary, and yet unclean.