62 



SERVICE PUBLICATIONS ISSUED IN JULY 



Circular 163. Paper Birch in the Northeast. 



166. The Timber Supply of the United States. 

 Silvical Leaflet 43. Red or Norway Pine. 

 44. Jack Pine. 



46. Limber Pine. 



47. Pifion Pine. 



50. Big Shellbark or Kingnut Hickory. 

 Unnumbered publications: 



Information Regarding Employment on the National Forests (third revision). 



Instructions for the Building and Maintenance of Telephone Lines on the National 

 Forests. 



