If, however, pairs of metallic disks, made, say, of zinc and copper, are alternated with disks of cloth wetted with a conductor of the second class, such, for instance, as dilute acid or any electrolyte, then the effect of the feeble potential difference between one pair of copper and zinc disks is added to that of the potential difference between the next pair, and thus by a sufficiently long series of pairs any required difference of potential can be accumulated.
They also make felts and a rough cloth of sheep's wool.
The woollen industry flourished in the county before the reign of John, when an exclusive privilege of dyeing cloth was conceded to the burgesses of Derby.
Wine and herrings were the chief articles of her commerce; but her weavers had been in repute from time immemorial, and exports of cloth were large, while her goldsmiths and armourers were famous.
The natives eat extensively the bulbs of the Martagon lily, and weave cloth out of the fibres of the Kamchatka nettle.
The men wear a loincloth or salaka, the women a kitamby or apron folded round the body from waist to heel, to which a jacket or dress is usually added; both sexes use over these the lamba, a large square of cloth folded round the body something like the Roman toga, and which is the characteristic native dress.
This led him about 1799 to devise his famous voltaic pile consisting of disks of copper and zinc or other metals with wet cloth placed between the pairs.
The cool damp cloth did wonders to get her own face back to normal and she finally regained control.
A still more lengthy and unfortunate suit was the attempt of Philip the Fair and his successors to incorporate the Flemish fief like the English one (1300-1326), thus coming Philip the into conflict with proud and turbulent republics;:, composed of wool and cloth merchants, weavers, fullers and powerful counts.
It was important as a trading fair for cutlery, earthenware, cloth and Dutch metal, and was abolished in 1846.