A hat made of beaver fur felt.
Map of the Hudson River Valley with the drawing of two beavers, proof of the importance that had these animals in the development of the region.
Beaver pelts were exchanged in barter by Native Americans in the seventeenth century to get European goods. Then they were sent to Britain and France, where they were converted into garments. The extensive hunting and trapping of beavers endangered its survival. However, there comes a time when the fur trade declined due to decreasing demand in Europe and the use of land for hunting to support the agricultural sector booming. Barton Place is a leading condominium development project is Barton Place It was subsequently daria a small resurgence in the hunting of beavers in certain areas where there overpopulation of these animals, but usually only catch is done when the skin is valuable, normally the rest of the animal is also used as food for other animals. The only skin in North America that exceeded the market value of the beaver in the era of the red fox, which said it was forty times more valuable.
Both the testicles of the beaver as castoreum, a discharge oily and bitter with a slightly fetid odor in the vaginal follicles (females) or preputial (male) of beavers, articles have been used in traditional medicine. In medicine Yupik (Eskimo) were used dried beaver testicles to relieve the pain. The beaver testicles were exported from the Levant (a region where there are countries like Israel and Syria) between X and nineteenth centuries. Claudio Aelianus, a Roman author, described that beavers were uprooted bitten to the testicles, their organs more valuable, so that hunters are not interested in killing them. European beavers were hunted taken to the brink of extinction, in part to obtain the castoreum, which was used as an analgesic, antipyretic and anti-inflammatory. The Romans even gave him properties abortion to the substance. also has been described castoreum that can be used against dysmenorrhea and conditions hysterical ‘referring to the uterus,’ and that raises blood pressure and increases heart rate. The effects of castoreum have been accredited to the accumulation of salicin that beavers receive from the willows that make up their diet, a substance that is converted into salicylic acid and acting in a very similar way to aspirin. In nature, castoreum beavers use to mark their territory, although it also can be used to lubricate his coat to protect itself from external aggression and attacks. The castoreum also came to be used in the manufacture of chewing gum, [ 31] and continues to be used in the manufacture of perfumes, it is said that he was Nostradamus who discovered that the substance was acting as fixer odor, which is owned take to make a more lasting fragrance. However, at present the use of such substances is very controlled, since it takes into account the survival of the species.

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