We called ourselves, “The Humorous Book Club.”

As we moved onto our third and fourth books, I found it funny that each of them had mentioned the four humors—a system of understanding health that fell out of style once germs were discovered.

The books we read were:

• Scurvy
  How a Surgeon, a Mariner, and a Gentlemen Solved the Greatest Medical Mystery of the Age of Sail
  Stephen Bown

• Cannibalism
  A Perfectly Natural History
  Bill Schutt

• The Hot Zone
  The Chilling True Story of an Ebola Outbreak
  Richard Preston

• The Origin of Feces
  What Excrement Tells Us about Evolution, Ecology, and a Sustainable Society
  David Waltner-Toews

• Dark Archives
  A Librarian’s Investigation into the Science and History of Books Bound in Human Skin
  Megan Rosenbloom