Conservation and restoration of fur objects made from keratin, which is also the protein that makes up skin, feathers, nails, hooves, claws, and horns. "The way I think a lot of people understand fur versus hair is in the density of follicles," says Ross McPhee, Curator of the Department of Mammalogy at the American Museum of Natural History. "So for fur-bearing animals—which were converted into coats and so-forth—people always wanted it to be something that was very dense, so there’s the idea therefore that fur is dense, and it certainly is in [the] kinds of fur-bearers that we use for this purpose. Whereas hair is not
Artificial nails Over time, exposure to MMA could cause lasting effects such as drowsiness, light-headedness, and trembling of the hands. Musicians who play stringed instruments may wear artificial nails as an aid in playing. Some guitarists like Don Ross, Doyle Dykes and James Taylor are known for doing so. Many intermediate and advanced classical and finger-style guitarists use varieties of fake nails to obtain a consistent, clear and bright tone with each pluck. The players of many ancient Chinese instruments, like the guqin, pipa, and ruan, also commonly used artificial nails. Even the Indian instrument sarod requires nails for tipping, so many