| LOOKING AT THE WORLD: AN ESSAY | 1 |
| THE JOURNEY | 17 |
| IN COMMENT | 107 |
| Rules for a Journey of Mind and Eye | 108 |
| Powers of 10: How to Write Numbers Large and Small | 112 |
| Units of Length | 114 |
| Reading the Rainbow | 116 |
| Instrumental Vision | 118 |
| Chronology | 122 |
| Sources and Notes | 127 |
| Resources for the Reader | 148 |
| Index | 151 |