320. Hedges and ditches.

No man making a ditch may cut into his neighbour's soil, but usually he makes it at the very extremity of his own land, forming a bank on his own side with the soil which he excavates from the ditch, on the top of which bank a hedge is usually planted1. Therefore, where two fields, or a field and the garden of a dwelling, are separated by a hedge or bank and an artificial ditch, the presumption or inference drawn from the hedge and ditch feature is that the boundary prima facie runs along the side of the ditch