| 1 | The system could be used to send coded messages, perhaps in Morse, to the surface. | |
| 2 | A call to the Science Museum confirmed that it still retained Morse's Graphophone equipment. | |
| 3 | Their logomachy was far more stimulating to his intellect than the reserved and quiet dogmatism of Mr. Morse. | |
| 4 | Mrs.Morse did not require a mother's intuition to read the advertisement in Ruth's face when she returned home. | |
| 5 | Corresponding messages went out in Morse code and required keys, which changed daily, to decipher -- get it? |