Pancreas, liver, spleen without its membranes, intestines, lacteals etc. after Kulm, Reverholt, Bidloo, Ruysch, Peyer and Heister. Engraving by Benard, late 18th century.

The Swiss physician, Joahnn Konrad Peyer, described the lymphatic nodules and masses in the walls of the ileum (part of the intestine). His illustration of the ileum was also used by Blankaart in 1686 (see catalogue no. 30018i)