PLATE III

FIG. 1.-A face from the double-chipped area, Columbia, Miss., in November, 1917, at the end of a 2year operation. Tree freshly chipped, dry-facing beginning at peak, gum exuding well at shoulder or corner. Droplets indicate the position of resin passages.

FIG. 2.-A face from the narrow-chipped area, Columbia, Miss., in November, 1917, at the end of a 2year operation. Tree freshly chipped. Abundant exudation all along the streak. Each droplet at a resin passage, clusters and lines of droplets indicate series of resin passages. Fourteen or more annual rings of sapwood exposed and participating in the yield.

PLATE IV

FIG. 1.-Face from narrow-chipped area at the end of the first year of turpentining (1916). About one foot in height of chipping surface used.

FIG. 2.-The hack to the left of the picture is a "00." This type was used in the narrow and double chipping at Columbia, Miss. The broad "billed" hack to the right is a "No. 2," the type used in the standard chipping at Columbia, Miss.

FIG. 3.-Face from the double-chipped area at the end of the first year of turpentining (1916). About two feet in height or twice as much chipping surface was used here as in the case of the narrow chipping. (Compare figure 1.)

FIG. 4.-Low face on narrow chipping at end of second year of turpentining (November, 1917). Note paddle over cup to keep out trash.

FIG. 5.-A dry face. A considerable number of trees on the double-chipped tract at Columbia, Miss., showed dry faces during the second year of the operation, indicating reduced vitality of trees.

FIG. 6. Relatively high face on the double-chipped area at the end of the second year of turpentining® (same height as standard chipping). Note chip-catcher attached to puller. Somewhat higher yields may be obtained by this method in short operations.