This article asks a simple question: when indistinguishable items of personal property owned by A and by B are mixed together, what rights do A and B have in relation to the resultant mass? It is argued that there is insufficient evidence in the positive law to provide any convincing answer to this question, and so it is asked which interpretation that can be drawn out from the law ought to be adopted. It will be shown that – both in relation to mixtures of goods and mixtures of cash – a rule of co‐ownership is to be preferred. The article's framework of analysis will be of interest to all those concerned by the relatively sparse case law that deals with foundational principles of personal property, and can help to guide a way forward in other contexts where the cases are silent, muddled, or fail to speak with one voice.

中文翻译：

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普通法中的财产混合分类

本文提出了一个简单的问题：当A和B拥有的不可区分的个人财产混合在一起时，A和B相对于所得质量有什么权利？有人认为，实证法中没有足够的证据为这个问题提供任何令人信服的答案，因此有人问应该采用哪种可以从法律中得出的解释。结果表明，就货物混合和现金混合而言，共同所有权规则是更可取的。涉及稀疏的判例法（涉及个人财产的基本原则）的所有相关人员都将对本文的分析框架感兴趣，它可以帮助在案件沉默，混乱或无法解决的其他情况下指导前进的道路一个声音说话。