This paper publishes, for the first time, Humphry Davy’s June 1798 “An Essay on Heat and the Combinations of Light” written in Penzance. It is the manuscript that he sent to Thomas Beddoes which secured for him the position of Superintendent of the Medical Pneumatic Institution in Bristol while aged only nineteen. It is thus a crucial document that increases our understanding about how Davy made that move from Cornwall to Bristol, without which it is highly unlikely that he would have followed the spectacular career trajectory that he did. The “Essay” provides new insights into Davy’s very early chemical reading (especially the English translations of Antoine Fourcroy’s Elémens d’histoire naturelle et de chimie), the extent to which Davy read this (and other texts) in French, the chemical apparatus he used, the experiments he made and the development and retraction of his theory of phosoxyd (later phosoxygen).

中文翻译：

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Humphry Davy 的早期化学知识、理论和实验：他 1798 年手稿的版本，“关于热和光的组合的论文”来自康沃尔皇家学院，考特尼图书馆，MS DVY/2

这篇论文首次发表了 Humphry Davy 于 1798 年 6 月在 Penzance 中撰写的“一篇关于热和光的组合的论文”。正是他寄给 Thomas Beddoes 的手稿让他在年仅 19 岁的时候就获得了布里斯托尔医疗气动机构主管的职位。因此，这是一份重要的文件，可以增加我们对戴维如何从康沃尔搬到布里斯托尔的理解，没有它，他极不可能遵循他所做的壮观的职业轨迹。“论文”为戴维非常早期的化学阅读（尤其是 Antoine Fourcroy 的 Elémens d'histoire naturelle et de chimie 的英文译本）提供了新的见解，戴维阅读这本书（和其他文本）的法语程度，他的化学仪器用过的，