Independently of Bartholin and Rudbeck, George Joyliffe (1621-58) observed the lymphatics. He communicated his discovery to Glisson early in 1652 and the latter included an account in the above work (Cap. xxxi). See No. 972. Includes a description of “Peyer’s patches”, the lymphoid follicles in the small intestine which have an important role in typhoid. They were first described by J. N. Pechlin (1644-1706) in his De purgantium medicamentorum facultatibus exercitatio nova (1672).