Accounts are given of the lives and careers of Edouard Claparède (1832–1871) and Johannes Lachmann (1832–1860), the authors of the landmark work of 19th century protistology “Etudes sur les Infusoires et les Rhizopodes”, published in 3 parts in 1859, 1860 and 1861. Accounts are also given on the origin of the monograph, the relationship of Claparède and Lachmann with Ernst Haeckel, and Claparède's role as a promoter of Darwin's theories. Suggestions as to how to properly cite the monograph of Claparède and Lachmann are provided, as well as a supplementary file listing the protist species currently accepted as having been first described in their monograph.

叙述了爱德华·克拉帕雷德 (1832-1871) 和约翰内斯·拉赫曼 (1832-1860) 的生平和事业，他们是 19 世纪原生生物学里程碑式著作“ Etudes sur les Infusoires et les Rhizopodes ”的作者，分三部分发表于1859 年、1860 年和 1861 年。还介绍了专着的起源、克拉帕雷德和拉赫曼与恩斯特·海克尔的关系，以及克拉帕雷德作为达尔文理论的推动者的角色。提供了关于如何正确引用 Claparède 和 Lachmann 的专着的建议，以及一个补充文件，列出了目前被接受为在他们的专着中首次描述的原生生物物种。