“We went into a small, windowless office crowded between two others that appeared empty. A middle-aged American woman was seated behind a metal desk. She appeared normal and reasonably attractive until she spoke; then her scarred gums showed that she had once had two or three times the proper number of teeth—forty or fifty, I suppose, in each jaw—and that the dental surgeon who had extracted the supernumerary ones had not always, perhaps, selected those he suffered to remain as wisely as he might.”