This story is a chemical mystery with an emphasis on qualitative analysis, descriptive chemistry, and forensics. It is as well yet another article in the continuing series, first presented by Thomas Waddell and Thomas R. Rybolt, which presents a scientific problem in mystery format in the context of the popular and beloved characters of Sherlock Holmes and Dr. Watson. There is a break in the story where readers (students and teachers) can ponder and solve the mystery. Sherlock Holmes provides his solution in the paragraphs following the break.
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机译：这个故事是一个化学之谜，重点是定性分析，描述性化学和法医学。这也是连续系列中的另一篇文章，该系列由Thomas Waddell和Thomas R. Rybolt首次提出，结合了夏洛克·福尔摩斯和沃森博士的受欢迎和喜爱的角色，提出了一个神秘形式的科学问题。故事有一个突破，读者（学生和老师）可以思考并解决这个谜。休息后，Sherlock Holmes在段落中提供了解决方案。
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