A peculiar superstition once prevailed, and has not wholly disappeared at this day, that white cedar possessed powerful healing properties. It was thought that water was purified by standing in a cedar bucket, and even that a liquid was improved by simply running through a spigot of this wood. Some eastern towns at an early period laid cedar water mains, partly because the wood was known to be durable, and partly because it was supposed to exercise some favorable influence upon the water flowing through the pipes. It was even believed that standing trees purified the swamps in which they grew. Vessels putting to sea from Chesapeake bay, sometimes made special effort to fill their water casks with water from the Dismal swamp, where cedars grew abundantly in the stagnant lagoons. About 100 years ago it was found that whole forests of cedar had been submerged in New Jersey during prehistoric times, and that deep in swamps the trunks of trees were buried out of sight. No one knows how long the prostrate trees had lain beneath the accumulation of peat and mud, but the wood was sound. Mining the cedar became an important industry in some of the large swamps, and it has not ended yet. The wood is sound enough for shingles and lumber, though it has been buried for centuries, as is proved by the age of the forests which grew over the submerged logs. Sometimes a log which has lain under water hundreds of years, rises to the surface by its own buoyancy when pressure from above is removed. This is remarkable and shows how long a time this cedar resists complete waterlogging. The wood of green cedar has a strong odor, and that characteristic remains with the submerged trunks. Experienced men who have been long engaged in mining the timber, are able to tell by the odor of a chip brought to the surface from a deeply submerged log whether the wood is sufficiently well preserved to be worth recovering and manufacturing. Trunks six feet in diameter have been brought to the surface. Few if any living white cedars of that size exist now. Many of the early uses of southern white cedar have continued till the present time, but in much smaller quantities. Fence rails are no longer made of it; shingles and cooperage have declined. On the other hand, it now has some uses which were unknown in early times, such as telephone and telegraph poles, crossties, and piling for railroad bridges and culverts.