CIO Forestry Quarterly 



poorly-drained soils as a result of their systematic drainage begun 

 since 1871. The excess in revenue from the State forests since 

 their drainage is estimated at approximately $2,500,000. The 

 cost of draining them was $750,000. A general increase of $125,000 

 in the net annual revenue, which is not ascribed to the drainage 

 of the swamps, has taken place during the last decade. By 

 deducting from the increased revenue the cost of draining and the 

 increase in the annual net revenue which is not due to the draining 

 of swamps, the increase in the revenue directly traceable to the 

 drainage of swamps constitutes about 16.4% on the invested 

 capital. This does not take into account the greater annual 

 increment of the timber on the drained land nor the increase in its 

 value. 



R. Z. 



OTHER CURRENT LITERATURE 



Effects of Varying Certain Cooking Conditions in Producing Soda 

 Pulp from Aspen. By H. E. Surface. Bulletin 80, U. S. Depart- 

 ment of Agriculture. Contribution from the Forest Service. 

 Washington, D. C. 1914. Pp. 63. 



Yields from the Destructive Distillation of Certain Hardwoods. 

 By L. F. Hawley and R. C. Pahner. Bulletin 129, Department 

 of Agriculture. Contribution from the Forest Service. Washing- 

 ton, D. C. 1914. Pp. 16. 



Southern hardwoods as the oaks. Red gimi, tupelo and hickory 

 have not been important in distillation and no information has 

 existed in regard to the amount of the varous products which 

 could be obtained. This bulletin aims to supply the above 

 information, also the relative value of the commonly used species 

 and of the different forms of material such as body wood, limbs 

 and slabs. 



An Outfit for Boring Taprooted Stumps for Blasting. By H. 

 Thompson. Farmers' Bulletin 600, Department of Agriculture. 

 Washington, D. C. 1914. Pp. 5. 



