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. 1. — 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 I he 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. 



