Doulton Lambeth stoneware bulbous Motto jug (signed DL)

Doulton Lambeth stoneware bulbous Motto jug
signed DL
Motto applied low relief with high relief cameos:
"Straight is the line of duty,
Curved is line line of beauty,
Follow the straight line thou shalt see,
The curved line ever follow thee"
Approx 20.5cm tall (top of handle)
c.1890's