66 forestry Quarterly. 



a good example is "Protection against rodents", which recites in 

 detail methods of poisoning rodents, formulae to use under vary- 

 ing conditions and a note of warning against the use of red lead 

 and coal tar because of its ineffectiveness as a protection. 



The modified sale regulations in the Timber Sales section are 

 due in part to a different legal interpretation of some of the 

 organic acts affecting the Service. For example, it is now neces- 

 sary that timber be formally appraised "Upon the character of 

 the timber, the cost of logging, transportation, and manufacture, 

 and the sale value of the manufactured products at practicable 

 markets." The Secretary now prescribes the maximum cut on 

 each Forest, the maximum and minimum stumpage prices, a 

 maximum limit for the approval of sales by supervisors (2,000 

 M. ft. board measure) and district foresters (20,000 M. ft. board 

 measure), and the authority for approving the cutting in emer- 

 gency cases in advance of advertisement is now vested solely in 

 the Secretary. Provision is made in Regulation S-13 for con- 

 tracts in excess of five-year periods. This will facilitate the sale 

 in large quantities of over-mature timber far from the ordinary 

 market where heavy initial investments are required. 



The procedure for appeals from a decision of the supervisor, 

 district forester, or a forester, is prescribed in Regulation S-15. 

 This also is an innovation in timber sale routine. 



The data on marking, brush disposal and scaling will be par- 

 ticularly interesting to lumbermen and professional foresters. 

 The instructions allowances for rot, or defects are very complete. 



The completion of the National Forest Manual has resulted in 

 systematizing much of the routine. For example, it was formerly 

 the custom to have permits for grazing issued subject to the ap- 

 proval of the Office of Grazing, saw-mill permits under Silvicul- 

 ture, and other uses under Lands ; now all uses are combined 

 under the latter office. 



T. S. W., Jr. 



"Columbian Mahogany" (Cariniana pyriformis): Its Charac- 

 teristics and Its Use as a Substitute for True Mahogany (Swie- 

 tcnia mahagoni). By George B. Sudworth, Clayton D. Mell and 

 Henry Pittier. Circular 185, U. S. Forest Service. Washing- 

 ton, D. C. 191 1. Pp. 16. 



