May Good for Visitors. May also is a good month for visitors, with more possibilities of agreeable days than February or April, though the warm days begin to come on apace soon after the middle of the month.

Fog in the Canyon. Upon rare occasions, fog banks sink into the Canyon deeps, and even now and again completely hide it from view. Do not let such a sight disappoint you. The fact is, you are being highly favored. If you will but exercise patience, you will see many marvels when the sun begins to work upon the fog. Slowly the great mass begins to show signs of uneasiness; large and small masses become broken off, and struggle as if to ascend; then, stretching apart as one stretches a mass of white cotton-batting, they are speedily dissipated into mist, and disappear. Below, in the deeper reaches, the fog rolls and tosses as if sleeping uneasily in its rocky bed. Great detached masses of rock that the eye had not been able to discern before are now made clear, the white fog behind them revealing their outlines in startling clearness. Indeed a fog may be called "the great revealer of the inner mysteries of the Canyon." It certainly shows forth more of the separating walls and canyons, and the detached buttes, than the most observant can discover in a month, without its presence.