Telephone receivers arc made of milk, which contains, a substance called casein. When casein is treated with formaldehyde, which can be made by distilling ants, we have a resinous substance which can be moulded into all sorts of shapes.
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Bibliographic details
Auckland Star, Volume LXV, Issue 277, 22 November 1934, Page 23
Word Count
39Untitled Auckland Star, Volume LXV, Issue 277, 22 November 1934, Page 23
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Acknowledgements
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