Footnote 61:

For example, Vesalius’ former teacher Jacobus Sylvius' theory that the absence of the rete mirabile in humans (a major feature of Galenic physiology) can be explained by changes in human anatomy since the time of Galen. See chapter 12, note 29. The 1555 edition substitutes the following in the middle of this sentence: “. . . the attacks of those who have not, as we have done in the Italian schools, seriously applied themselves to anatomy, and now, old men wasting away with envy of the true discoveries of the young, will be ashamed, like other followers of Galen, to have been blind until now and not to have noticed the things we now set forth, even though they claim a great name for themselves in this art . . .”