Footnote 24:

The 1555 edition adds parenthetically that this was only a dissection of the visceral area, “as was the custom there.” Significantly, less than a quarter of the 1543 Fabrica, Books 5 and 6, is concerned with traditional splanchnology. Vesalius’ criticism of the neglect of bones, muscles, nerves, and blood vessels in the next sentence also has a bearing on the emphasis given them in the Fabrica: muscles alone (Bk. 2) take up 188 pages of the 1543 edition, compared with just 150 for splanchnology (Bks. 5-6).