The researchers used a sophisticated spectroscopic technique called ICP-AES, which can detect the major and minor element present in the glass, including metals the Romans used to decolour it.
In an 1893 report, he criticized the limitations of two-dimensional flower drawings or dried specimens that get distorted and decoloured, and even bemoaned the three-dimensional possibilities: "flowers, when copied in wax, become like the cheerless elements of funereal wreaths; when given in papier-mache, they are necessarily exaggerated and grotesque.
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