. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 8 BULLETIN 309, U. S. DEPARTMENT OF AGRICULTURE. summer, for my brother says that all through the present summer it has been cold enough for an overcoat at night in the town of Sayula, where he resides. During January, he says that it reaches to near zero and at 10 o'clock the next day it is up to 70° again. Mr. O. F. Cook corroborates Mr. McEwen's observations regarding the relative coolness of the climate in which this grass thrives. In Guatemala, where the former has noted the plant especially, he found the same con
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 8 BULLETIN 309, U. S. DEPARTMENT OF AGRICULTURE. summer, for my brother says that all through the present summer it has been cold enough for an overcoat at night in the town of Sayula, where he resides. During January, he says that it reaches to near zero and at 10 o'clock the next day it is up to 70° again. Mr. O. F. Cook corroborates Mr. McEwen's observations regarding the relative coolness of the climate in which this grass thrives. In Guatemala, where the former has noted the plant especially, he found the same conditions. Figure 8 shows a comparatively sparse stand of zacaton on the Vulcan de Agua, near Antigua, Guatemala, one of the early localities from which the plant was collected. Figure 9, from a photograph taken in Guatemala, shows the grass promptly claiming the neglected portion of a formerly cultivated field on a terraced hillside along the road between Totonicapam and Quezaltenango, Guatemala, show- ing also in the middle distance, on the mountain slope below the pines, a character- istic wire-grass formation con- tending with the pines for suprem- acy. Both of these figures are from negatives made under the direction of Mr. Cook by Mr. C. B. Doyle, of the Bureau of Plant Industry. The grass is said to flower from August to October, depending upon altitude and other conditions, and usually attains a height of 5 to 7 feet. The usable portions of the roots vary in length from 2 to 30 inches. The diameter of the roots range from one sixty-fourth to three thirty-seconds of an inch. They are gathered at all seasons of the year, peons digging them up with an implement resembling a hoe in shape. After washing, cleaning, and drying, the roots are cut from the grass, graded, and separated according to quality, length, and color, and finally baled ready for shipment. Vera Cruz and Tampico are the chief exporting ports, while France, Germany, and the United States are the chief users o
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