"Sea-sickness is a mystery," said he, "and the more you study it, the less you seem to understand it. Some persons are never disturbed by the motion of a ship, no matter how violent it may be, while others cannot endure the slightest rocking. Most of the sufferers recover in a short time, and after two or three days at sea are as well as ever, and continue so. On the other hand, there are some who never outlive its effects, and though their voyage may last a year or more, they are no better sailors at the end than at the beginning.
"I knew a young man," he continued, "who entered the Naval Academy, and graduated. When he was appointed to service on board a ship, he found himself perpetually sick on the water; after an experience of two years, and finding no improvement, he resigned. Such occurrences are by no means rare. I once travelled with a gentleman who was a splendid sailor in fine weather; but when it became rough, he was all wrong, and went to bed."
"Were you ever sea-sick, Doctor?" queried Frank.
"Never," was the reply, "and I had a funny incident growing out of this fact on my first voyage. We were going out of New York harbor, and I made the acquaintance of the man who was to share my room. As he looked me over, he asked me if I had ever been to sea.
"I told him I never had, and then he remarked that I was certain to be sea-sick, he could see it in my face. He said he was an old traveller, and rarely suffered, and then he gave me some advice as to what I should do when I began to feel badly. I thanked him and went on deck.
"As the ship left the harbor, and went outside to the open Atlantic, she encountered a heavy sea. It was so rough that the majority of the passengers disappeared below. I didn't suffer in the least, and didn't go to the cabin for two or three hours. There I found that my new friend was in his bed with the very malady he had predicted for me."
"What did you do then, Doctor?"
"Well, I repeated to him the advice he had given me, and told him I saw in his face that he was sure to be sea-sick. He didn't recover during the whole voyage, and I never suffered a moment."
The laugh that followed the story of the Doctor's experience was interrupted by the breakfast-bell, and the party went below. There was a light attendance, and the purser explained that several passengers had gone ashore.