When modern engineering comes to the aid of the Hopi in storing the occasional vast rushes of water for use throughout the year, a new era will dawn for the Peaceful People. They may then become prosperous farmers and gradually forget the days when they invoked the powers of nature with strange charms and ceremonies. If the Hopi know well the springs, they are not less perfect in knowledge of plants that are useful to them. One day Kopeli, the former Snake chief, undertook to teach his pupil, Kuktaimu, the lore of the plants growing near the East Mesa. They set out for a flooded cornfield near the wash, and long before they reached it, they could hear the watchers emitting blood-curdling yells to scare away the hated _angwishey_, crows, that from time to time made a dash for the toothsome ears. It goes without saying that the day was beautiful, for in August thunder-cloud masses often fill the sky with graceful forms, tinted beneath by a rosy glow reflected from the surface of the red plains. The rain had started the vegetation anew and the deep green cornfields showed its benign influences. Kopeli was communicative, but Kuktaimu, although having been blessed by Saalako with a Hopi name, was weak in the subtleties of Hopi speech and missed many points to which, out of politeness, he responded _Owi_, "yes." Still, the queer-sounding names of the plants and their uses given by Kopeli were duly put down on paper, for which the Hopi have a word which literally means _corn-husk_. On their journey around the cornfields they met various groups of watchers, some reclining beneath the sloping farm shelters of cottonwood boughs, some chatting together or gnawing ears of corn roasted in a little fire. Everyone requested matches and willingly assisted in conferences over plants of which Kopeli might be doubtful. Boys with their bows and arrows tried for shots at crows, and little girls minded the babies. Life in the fields is full of enjoyment to the Hopi, and the children especially delight to spend a day picnicking amidst the rustling corn-leaves. The plants having been hunted out in the cornfields, Kopeli and Kuktaimu sought higher ground among the rocks below the mesa, where different species of plants grow. At the foot of the gray rocks are found many plants of great medicinal and ceremonial value to the Hopi, according to the Snake priest, who grew enthusiastic over a small silvery specimen with pungent odor. "Very good medicine," he said. At this juncture, when the plant had been carefully placed in the collecting papers, Kopeli made a characteristic gesture by rapidly sliding one of his palms over the other and said _pasha_, "all." The nearness of the evening meal must have been the influence that caused Kopeli to say that the flora of Tusayan had been exhausted in a single day's search, for subsequent journeys about the mesas brought to light many other plants that have place in Hopi botany.