Other Current Literature. 409 



OTHER CURRENT LITERATURE. 



Pith-ray Flecks in Wood. By H. P- Brown. Circular 215, U. 

 S. Forest Service. Washington, D. C. 1913. Pp. 15, ill. 



Confirms previous observations as to the pathological origin 

 of pith flecks or medullary spots without adding any new infor- 

 mation to the subject. 



Bibliography of the Pulp and Paper Industries. By H. E. Sur- 

 face. Bulletin 123, U. S. Forest Service. Washington, D. C. 

 191 3. Pp. 48. 



The bibliography contains not only the more formal works 

 and treatises but also the important pamphlets and reprints. Ref- 

 erences to periodical literature have not been included, except in 

 a few cases where the articles were considered of especial im- 

 portance. Contains also lists of paper trade periodicals, general 

 reference works, and general reference periodicals. More than 

 800 books, pamphlets, and reprints, which deal directly with pulp 

 and paper, their raw materials, manufacture and uses, or with 

 closely related subjects, have been published. 



B.vperiments in the Preservative Treatment of Red Oak and 

 Hard Maple Crossties. By F. M. Bond. Bulletin 126, U. S. 

 Forest Service. Washington, D. C. 1913. Pp. 92. 



A preliminary report describing treatment of ties placed on 

 a test track for closer comparison of the effect of various treat- 

 ments. 



The Grinding of Spruce for Mechanical Pulp. By J. H. 

 Thickens. Bulletin 127, U. S. Forest Service. Washington, D. 



c. Pp. 54. 



Reports experiments on the influence of various conditions on 

 output and quality of ground woodpulp. 



Pulpwood Consumption, ipii. Forest Products, No. i. Bu- 

 reau of the Census. Washington, D. C. 1913. Pp. 10. 



Slack Cooperage Stock, ipii. Forest Products, No. 3, Bureau 

 of the Census. Compiled in co-operation with the U. S. Forest 

 Service- Washington, D. C. 1913. Pp. 10. 



