Breakfast. Some of us eat this meal while others skip it. Some of us sit down while others eat on the run. But how many people really know what happens to their food once it slips down their throats?

The Itinerary of a Breakfast gives a "popular account of the travels of a breakfast through the food tube and of the ten gates and several stations through which it passes, also the obstacles which it sometimes meets." Authored by the creator of the corn flake and namesake of some of our most popular breakfast cereals, Dr. John Harvey Kellogg describes in detail each process of the digestive...