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A piece of information about this material, taken from BBC, "A History of the World"<ref name=bbc>The British Museum, BBC (2011). A History Of The World. Erinoid Plastic. Retrieved 24 March 2020 from [http://www.bbc.co.uk/ahistoryoftheworld/objects/ZlmnlY2MT5a9ecQAnfJyKA BBC]</ref>.): | A piece of information about this material, taken from BBC, "A History of the World"<ref name=bbc>The British Museum, BBC (2011). A History Of The World. Erinoid Plastic. Retrieved 24 March 2020 from [http://www.bbc.co.uk/ahistoryoftheworld/objects/ZlmnlY2MT5a9ecQAnfJyKA BBC]</ref>.): | ||
<blockquote><q> | <blockquote><q>Casein plastic was made under the trade name "Erinoid" at Lightpill Mills in Stroud for about 70 years from 1912. Unlike the later plastics such as Bakelite, Casein plastic could be dyed in many bright colours. It could withstand the rigours of washing and ironing, dry-cleaning solvents, etc, and became popular for buttons and other household goods. It was eventually replaced by oil-based plastics for most users but is still made today on a small scale for high-quality goods.</q></blockquote> | ||
'''Note''': Genuine ivory always has grain. The grain is characterized by lines of random spacing and irregular thickness. | '''Note''': Genuine ivory always has grain. The grain is characterized by lines of random spacing and irregular thickness. | ||