“But it isn’t a rifle that uses gunpowder,” the captain replied.
“Then it’s an air gun?”
“Surely. How can I make gunpowder on my ship when I have no saltpeter, sulfur, or charcoal?”
“Even so,” I replied, “to fire underwater in a medium that’s 855 times denser than air, you’d have to overcome considerable resistance.”
“That doesn’t necessarily follow. There are certain Fulton-style guns perfected by the Englishmen Philippe-Coles and Burley,
“But it isn’t a rifle that uses gunpowder,” the captain replied.
“Then it’s an air gun?”
“Surely. How can I make gunpowder on my ship when I have no saltpeter, sulfur, or charcoal?”
“Even so,” I replied, “to fire underwater in a medium that’s 855 times denser than air, you’d have to overcome considerable resistance.”
“That doesn’t necessarily follow. There are certain Fulton-style guns perfected by the Englishmen Philippe-Coles and Burley,
