- Poor Tom, he's gone to Abney Park.
- A sample of each coating is expozed on an Eastman 1B sensitometer and to a wedge spectrograph.
- The sensitometer results show that no loss of relative speed occurs when using the curve-shape control addenda of this process.
- Let me dedicate this book to the memory of Abney Hall-its kindness and its hospitality. And a happy Christmas to all who read this book.