A perfect blend of humor and clarity—in text and in artwork—explains the anatomy of human waste, the mechanics of a flush toilet and the subsequent treatment of waste in septic and sewer systems.
Cartoony images of three toilet bowls—one being used by a thirsty, shaggy dog, one surrounded by a somber family with a dead pet goldfish, and one heaped with flowers, shown outside a home—adorn the first page of the book, along with this opening sentence: “Everybody knows what a toilet is for.” Genius Macaulay, with Keenan’s (unspecified) assistance, continues this tongue-in-cheek romp with clever drawings as he also carefully discusses such scientific facts as the function of bacteria in breaking down waste; the physics behind the tank, the bowl and the siphon; and the role of wastewater treatment plants in the overall water cycle. Cutaway views aid in showing exactly how various systems work, while unique visual angles of everything from human organs topped with eyeglasses to a bird’s-eye view of a bustling city encourage viewers to venture beyond reading literacy to art appreciation.
Even readers who received fastidious toilet training and admonitions against potty humor will let down their guard and find this book both informative and entertaining. (glossary, resources, index, author’s notes) (Informational early reader. 7 & up)