"The sheep in particular might be improved into a valuable stock, and would no doubt thrive, since the winters are very temperate. But I should be sorry that extensive pasture farms were introduced, as it would tend to diminish a population invaluable for the supply of our navy. The improvement of the arable land, on the contrary, would soon set them beyond the terrors of famine with which the islanders are at present occasionally visited; and, combined with fisheries, carried on not by farmers, but by real fishers, would amply supply the inhabitants, without diminishing the export of dried fish. This separation of trades will in time take place, and then the prosperous days of Zetland will begin. The proprietors are already upon the alert, studying the means of gradual improvement, and no humane person would wish them to drive it on too rapidly, to the distress and perhaps destruction of the numerous tenants who have been bred under a different system. "I have gleaned something of the peculiar superstitions of the Zetlanders, which are numerous and potent. Witches, fairies, etc., are as numerous as ever they were in Teviotdale. The latter are called _Trows_, probably from the Norwegian _Dwärg_ (or _dwarf_) the D being readily converted into T. The dwarfs are the prime agents in the machinery of Norwegian superstition. The _trows_ do not differ from the fairies of the Lowlands, or _Sighean_ of the Highlanders. They steal children, dwell within the interior of green hills, and often carry mortals into their recesses. Some, yet alive, pretend to have been carried off in this way, and obtain credit for the marvels they tell of the subterranean habitations of the trows. Sometimes, when a person becomes melancholy and low-spirited, the trows are supposed to have stolen the real being, and left a moving phantom to represent him. Sometimes they are said to steal only the heart--like Lancashire witches. There are cures in each case. The party's friends resort to a cunning man or woman, who hangs about the neck a triangular stone in the shape of a heart, or conjures back the lost individual, by retiring to the hills and employing the necessary spells. A common receipt, when a child appears consumptive and puny, is that the conjurer places a bowl of water on the patient's head, and pours melted lead into it through the wards of a key. The metal assumes of course a variety of shapes, from which he selects a portion, after due consideration, which is sewn into the shirt of the patient. Sometimes no part of the lead suits the seer's fancy. Then the operation is recommenced, until he obtains a fragment of such a configuration as suits his mystical purpose. Mr. Duncan told us he had been treated in this way when a boy.