Jackson, Rebecca External, Max Planck Institute for the History of Science, Max Planck Society;
https://muse.jhu.edu/article/839326 (Any fulltext)
Jackson, R. (2021). ‘The Uncertain Method of Drops’: How a Non-Uniform Unit Survived the Century of Standardization. Perspectives on Science, 29(6), 802-841. doi:10.1162/posc_a_00395.