“This is very different from yesterday,” thought Jack; “suppose I try the medicine?”

“I am not very well, Mr Pottyfar, and those pills of the doctor’s don’t agree with me—I always am ill if I am long without air and exercise.”

“Very true,” said the first lieutenant, “people require air and exercise. I’ve no opinion of the doctor’s remedies; the only thing that is worth a farthing is the universal medicine.”

“I should so long to try it, sir,” replied Jack; “I read the book one day, and it said that if you took it daily for a fortnight or three weeks, and with plenty of air and exercise, it would do wonders.”

“And it’s very true,” replied Mr Pottyfar, “and if you’d like to try it you shall—I have plenty—shall I give you a dose now?”

“If you please, sir,” replied Jack; “and tell me how often I am to take it, for my head aches all day.”

Mr Pottyfar took Jack down, and putting into his hand three or four bottles of the preparation, told him that he was to take thirty drops at night, when he went to bed, not to drink more than two glasses of wine, and to avoid the heat of the sun.

“But, sir,” replied Jack, who had put the bottles in his pocket, “I am afraid that I cannot take it for long; for as the ship is ready for fitting, I shall be exposed to the sun all day.”

“Yes, if you are wanted, Mr Easy; but we have plenty here without you; and when you are unwell you cannot be expected to work. Take care of your health; and I trust, indeed I am sure, that you will find this medicine wonderfully efficacious.”

“I will begin to-night, sir, if you please,” replied Jack, “and I am very much obliged to you. I sleep at the Governor’s—shall I come on board to-morrow morning?”