What do We Mean by “Deviation of the Compass”?
When people speak of “deviation of the compass” they mean the difference of a ship’s compass from the magnetic meridian, caused by the near presence of iron. In iron ships the amount of deviation depends upon the direction, with regard to the magnetic meridian, in which the ship lay when being built. It is least when the ship has been built with her head south. Armor-plated ships should be plated with their head in a different direction from that in which they lay when built.
The mode now generally employed to correct deviation is by introducing on board ship masses of iron and magnets to neutralize the action of the ship’s magnetism so far as possible.
Compasses are sometimes carried on masts in iron vessels as a means of removing them from the disturbing influence of the iron of the hull. In this position they serve as standards of comparison for the binnacle compass.
Wooden ships are also affected, though in a far less degree, by the direction in which they lie when building.
The Story in the Making of a Pair of Shoes[46]
The covering and protection of the feet has been a necessity in all but the warm climates for very many centuries, various articles being used for this purpose. Leather is now very generally employed, though wood is often used in Holland and France and paper in China and Japan. The moccasin of the American Indian was made of untanned deer skin. The first historical mention of a shoe is in the Old Testament, where Abraham refused to take as much as a “shoe-latchet” from the King of Sodom. This probably meant a sandal, leather strapped to the foot, though the Jews wore shoes as well, and both shoes and sandals were worn in Greece and Rome. Both in ancient and modern times the styles of shoes worn have varied greatly, fashion taking hold of them. In the reigns of the English kings Henry I and Stephen, the people of the court wore shoes with long points stuffed with tow and made to coil like a ram’s horn, and by the time of Richard II the points had grown so long as to reach the knee, to which they were fastened by silver or gold chains. In the eighteenth century ladies wore shoes with absurdly high heels, a ridiculous fashion which has come back within our own times. An improvement which was adopted in the early nineteenth century was that of making shoes right and left. Boots, which have at times been much worn, are a variety of shoe lengthened to protect part of the legs.
Until within a recent period the trade of shoemaker was an active one, all boots and shoes being made by hand. At the present time, however, the old-time shoemaker, with his bench, lapstone, last and awls has almost gone out of business, except as a cobbler, mending instead of making having become his usual occupation. In his place has come the factory hand, nearly all footwear being now a product of machinery, and this of greatly varied and effective character. In this form shoemaking has become a thriving industry in New England and in some other parts of the United States. This method has greatly decreased the cost of shoes, invention having so hastened and cheapened all its processes that the number of shoes that it would take an old-time shoemaker a year to make can be turned out in a few hours by modern machinery.