A mule's desperate plunges to escape generally aid us to get him into the water, for he loses his balance and is easily pushed in. But his look of dazed surprise is comical when, after such a plunge, in which he sinks below his head, he arises, snorts, blows the water out of his nostrils, and begins to look about him. The burro part of his nature, however, soon settles him down, and he pulls out for the shore, glad to rejoin his companions.

Once in a while an animal breaks loose, gets halfway across, becomes confused, and not knowing which way to go, is carried down to the rapids and dashed to death.

CHAPTER XXIX. Climate And Weather At The Grand Canyon

Difference between Rim and Canyon. The climate at the Grand Canyon refuses to be defined in a paragraph. What is true of the country along the rim is not true of the banks of the river itself. The midway region, half-way down the trail, likewise has a climate all its own. For as you go down in summer, the thermometer goes up; and as you come up, in winter, the thermometer goes down. The difference of nearly a mile in altitude between the surface of the Colorado River and the rim of the Canyon is equivalent to going hundreds of miles north and south on the level. Hence it is that when it is winter on the rim, it is like spring down in the depths; when it is spring on the top of the world, the heat below is tropical.

Weather not Extreme. Bear in mind, though, that neither the cold of winter nor the heat of summer, in northern Arizona, are as frigid or as torrid as the readings of the thermometer may seem to indicate. The cold or heat is not felt to such an extreme as in the East. A minimum of humidity is the basic reason for this wide difference between, for example, the July or January climate of New York, and the July or January climate of the Grand Canyon. Extremes that in New York drive people to the cool seashore or To California's winter warmth, here bring no discomfort. You don't feel the weather changes so much, just because the air is so much dryer.

Mild in Summer and in Winter. Again, the altitude of the Grand Canyon rim—in places nearly a mile and a half above sea-level—makes the summers cooler than the latitude would indicate. It is ten degrees cooler, in July, at Flagstaff, Arizona, than at Salt Lake City, three hundred miles north in Utah. In turn, the southerly location of this titanic wonderland causes the winters to be milder than in Colorado, Utah and Montana.

Average Condition. Visitors should bear in mind that the Grand Canyon is an all-the-year-round resort. Unlike the Yellowstone and many other far west scenic playgrounds, one may visit there with comfort any time of the year. While certain periods are more favorable than others for outdoor life, each season has its distinctive joys.

As a rule, this part of Arizona is a true land of sunshine. Sunny days are largely in evidence.

As a rule, the air is dry. Even the rains don't soak it through.

As a rule, except on the edge of the rim, the wind velocity is under the average.