Trundles having only six staves will work with large wheels.
They are coated internally with glue, and painted in the well-known colours, blue staves and white heads.
The barrels employed in the transport of petroleum products are made of well-seasoned white-oak staves bound by six or eight iron hoops.
These last already appear in miniatures of the 9th century; from the II th onwards they predominated; and in the 13th century they ousted all other forms. Originally plain, the crook was from the lath century onwards often made in the form of a snake (5), which in richer staves encircled the Lamb of God or the representation of a figure.
It was lined within and without with gold, and through four golden rings were placed staves of acacia wood, by means of which it was carried.
