"But don't take a firelock, Repton. The sergeants would be sure to notice that there was an extra man. You had better join us, just as we set out. I will say a word or two to you, then do you follow on, in the dark. The men will suppose you are one of the drummers I am taking with me, to serve as a messenger, or something of that sort. That way you can follow close behind me, while I am posting the sentries after leaving the main body at the guardhouse. After posting the last man at the seashore, I can turn off with you for a few yards, as if giving you an order.
"Then I will go back and stay for a time with the last sentry, who will naturally think that the drummer has been sent back to the guardhouse. I will recommend him to be vigilant, and keep by him for some time, till I am pretty sure you have taken to the water and swam past; so that if the sentry should hear a splash, or anything, I can say it can only be a fish; and that, at any rate, it would not do to give an alarm, as it cannot be anything of consequence.
"You see, you don't belong to the garrison, and it is no question of assisting a deserter to escape. Anyhow, I will do it."
Thanking Captain Antrobus greatly, for his promise of assistance, Bob went off into the town; where he bought a suit of Spanish clothes, such as would be appropriate for a small farmer or trader. He then presented his letter of credit at the merchant's, and drew a hundred pounds, which he obtained in Spanish gold. This money and the clothes he put in an oilskin bag, of which the mouth was securely closed. This he left at the doctor's.
As soon as it became dark he went down again. The doctor had a greatcoat and hat in readiness for him--there being plenty of effects of men who had died in the hospital--and as soon as Bob had put them on, walked across--with Bob following him--to the spot where Captain Antrobus' company were falling in. Just as they were about to march, the doctor went up to the captain; who after a word or two with him said to Bob, in a voice loud enough to be heard by the noncommissioned officer, close to him:
"Well, you will keep by me."
The night was a dark one, and the party made their way down to the gate, where the passwords were exchanged; and the company then moved along by the narrow pathway between the artificial inundation and the foot of the Rock. They continued their way until they arrived at the building that served as the main guard of the outlying pickets. Here two-thirds of the company were left; and the captain led the others out, an officer belonging to the regiment whose men he was relieving accompanying him. As the sentries were posted the men relieved fell in, under the orders of their officer and, as soon as the last had been relieved, they marched back to the guardhouse.
A minute later, Captain Antrobus turned to Bob.
"You need not wait," he said. "Go back to the guardhouse. Mind how you go."
Bob saluted and turned off, leaving the officer standing by the sentry. He went some distance back, then walked down the sand to the water's edge, and waded noiselessly into the water. The oilskin bag was, he knew, buoyant enough to give him ample support in the water.