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Russia leather is a particular form of bark-tanned cow leather. It is distinguished by a later processing step, after tanning, where birch oil is worked into the rear face of the leather. This gives a leather that is particularly hard-wearing, flexible and resistant to water. The oil impregnation also deterred insect attack. The high quality of this leather, its usefulness for a range of purposes, and its manufacture being difficult to replicate elsewhere, led to it being a major export good from Russia in the 17th and 18th centuries. It was an important item of trade for the Muscovy Company.〔 In German-speaking countries, this leather was also known by the name Juchten or Juften. == Production == Producing the leather involved three processes:〔 * Tanning. This was a bark tanning process, similar to much other tanning. * Saturating the tanned hide with birch oil. This is the most distinctive part of the process, giving Russia leather its water resistance and distinctive smell. * Dyeing either red or black. This was not an essential part of the process, but was characteristic. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Russia leather」の詳細全文を読む スポンサード リンク
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