Opportunities for Swimming. Though the current of the Colorado is so strong, there are times and places where it affords one who is not over-fastidious as to the color of the water, an opportunity for an excellent swim. But care must be exercised. At the foot of Bass Trail, there are two or three rocky recesses where one may go in and swim, within the arms of the protecting rocks, without danger. It is not well to swim in the earlier months of the year, when the water is excessively cold. Several times in January and February I have been overcome with temptation, and have jumped in "merely for the plunge." The sensation is one of being skinned alive, and one plunge is all that one cares for. Yet on emerging and dressing, how fine one feels after it. The great melting time of the snows on the mountains is the end of May, June and early July. It grows warmer in July, and from then on to December one may enjoy it. In September and October it is generally deliciously warm, and I have gone in half a dozen times a day. A good swimmer can cross the stream, if he does not lose his head, for the current is powerful, and one is borne down far faster than he imagines, and it is much further across than it seems to be. Several times, when I have wanted to cross, and there was no boat, I have swam across to the other side, wearing my shirt and trousers and carrying my boots slung around my neck. But it is, hard work and scarcely worth the risk.