After we had played these sorts of antics for some time, I began to consider that it would be rather tiresome to have to walk all the way back by myself, and that either I must go across to Jerry, or get him to come over to me.  I was the best swimmer, so I resolved to go over to him.  I made signs that I would do so, and he signified that he was very glad to hear it.  Old Surley seemed as pleased as I was at seeing Jerry, and leaped and bounded about, barking every now and then, after his own fashion, to show his satisfaction.  Two or three times he ran down to the water, as if he intended to plunge in and to swim across; and each time he came back whining and looking up in my face, as if he had thought it would be wiser not to venture in.  I had good reason afterwards to admire the instinct which prompted him to refrain from doing what he evidently wished to do.