The Wealth of Nations by Part 1 Chapter 10 Page 116

for the avoiding of them, by persons coming into a parish clandestinely: for the giving of notice is only putting a force upon the parish to remove. But if a person’s situation is such, that it is doubtful whether he is actually removable or not, he shall by giving of notice compel the parish either to allow him a settlement uncontested, by suffering him to continue forty days; or, by removing him, to try the right.”

This statute, therefore, rendered it almost impracticable for a poor man to gain a new settlement in the old way, by forty days’ inhabitancy.

But that it might not appear to preclude altogether the common people of one parish from ever establishing themselves with security in another, it appointed four other ways by which a settlement might be gained