(Chapter 27) Footnote 49:

Reading praecidi for praecindi (1543). Vesalius’ language paraphrases Cicero De officiis 3.11.46: durius etiam Athenienses, qui sciverunt, ut Aeginetis, qui classe valebant, pollices praeciderentur — supposedly to prevent them from handling an oar. We are grateful to T.J. Figueira for help in finding this reference. For a different version of this story, see Plutarch Lysander 9.5.4ff.