Galen's System of Physiology and Medicine : An Analysis of His Doctrines and Observations on Blood Flow, Respiration, Humors and Internal Diseases.

"Siegel covers a great deal of the Galenic writings.

All historians will be grateful for his careful study of the original texts, and the points of view presented.

Siegel helps to plug lacunae in our knowledge of Galen, and indicates his importance in his own time and ours." (Jama).