Hassler, Donald M. (1963). Erasmus Darwin. p. 164. Retrieved 18 November 2021.
Duffin, C.J.; Moody, R.T.J.; Gardner-Thorpe, C. (2013). A History of Geology and Medicine. Geological Society London: Geological Society special publication. Geological Society. p. 336. ISBN978-1-86239-356-1. Retrieved 1 May 2019.
Shelley, Mary. "Introduction" Frankenstein (1831 edition) Gutenberg "Many and long were the conversations between Lord Byron and Shelley, to which I was a devout but nearly silent listener. ... They talked of the experiments of Dr. Darwin, (I speak not of what the Doctor really did, or said that he did, but, as more to my purpose, of what was then spoken of as having been done by him,) who preserved a piece of vermicelli in a glass case, till by some extraordinary means it began to move with voluntary motion." She confused vermicelli, pasta, for the actual word Darwin and Shelley used, which was vorticella, a miniscule [sic] wheel animal. This was a major mistake or flub. As she admitted, everything she knew about science she got from her husband Shelley. [underlining added]
"Project Update: The Speaking Machine". Erasmus Darwin House. 9 January 2013. Archived from the original on 24 March 2015. Retrieved 23 February 2015.{{cite web}}: CS1 maint: bot: original URL status unknown (link)