186 



FOREST PRODUCTS 



about I in. and is done with a concave gouge instead of a semi-round or 

 circular hack as in this country. 



A single zinc apron or gutter is used to guide the resin into an earthen- 

 ware cup hung below it. The apron is inserted in a slit made by a chisel 

 specially designed for the purpose. The cup contains about i qt. and 

 is supported by a nail at the base and the apron at the top. The aprons 

 and cups are raised each year. Only two faces are generally permitted 



Photograph tty Nelson C. Brown. 



Fig. S3.— Method of tapping maritime pine near Arres in the Landes region of France. 

 A narrow "face" is chipped and the apron and cup moved up eachjyear. Trees 

 are frequently bled for thirty years or more. The faces heal over and are changed to 

 diflferent parts of the trunk. 



on each tree at one time. Chipping is done up to 12 to 15 ft. in height or 

 more. The worker uses stilts to chip at the higher levels. 



After bleeding, these narrow faces heal over so that the face can be 

 moved to different parts of the tree from time to time and the tapping 

 continued for a period of thirty to forty years or more. This is in sharp 



