Nothing wrong with it, but probably no longer useful. I copied the following from Wiki:
"Fused silver nitrate, shaped into sticks, was traditionally called "lunar caustic". It is used as a cauterizing agent, for example to remove granulation tissue around a stoma."
It was silvery colored like the moon, hence the name lunar caustic.
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![“An Essay on the Application of the Lunar Caustic in the Cure of Certain Wounds and Ulcers (English Edition)”，作者：[John Higginbottom]](https://images-cn.ssl-images-amazon.cn/images/I/513Voze4-rL._SY346_.jpg)
此商品在美国亚马逊上最有用的商品评论
美国亚马逊：
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Outdated medical book.
2015年9月8日 -
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