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FORESTRY AND IRRIGATION 



the United States, is one which, al- 

 though appreciated for some time past, 

 has not been given the prominence 

 which its importance warrants. 



Southern 

 Forestry 



An agent of the Forest 

 Service started on a trip 

 January 20 for the pur- 

 pose of superintending the examina- 

 tion of forest tracts aggregating over 

 a million acres in the southeastern 

 states. He goes in response to appli- 

 cations received from owners who de- 

 sire to introduce conservative manage- 

 ment on their forest lands. Of these 

 lands, 702,000 acres are in Florida. 

 252,000 in Missouri, 38,000 in Louisi- 

 ana, 23,500 in Mississippi, and 7,000 

 in Texas. 



In addition to these preliminary ex- 

 aminations, work will be begun to 

 bring under conservative management 

 a forest of 70,000 acres in Arkansas. 

 Since the Forest Service has previous- 

 ly prepared a working plan for a tract 

 of 100,000 acres at Pine Bluff, Ark., 

 and other co-operative plans have been 

 requested in the same state for 20,000 

 acres more, the total acreage in the 

 southeast for which advice has been 

 sought from the Forest Service now 

 amounts to about a million and a quar- 

 ter acres. 



Work on With the exception of 



Shoshone t ^ e engineering work 



necessary in connection 

 with the construction of the Shoshone 

 dam and Corbett tunnel in northern 

 Wyoming, no field work was done in 

 December on the Shoshone project. 



Cross sections of the canyon have ' 

 been extended to develop accurately 

 the topography for construction pur- 

 poses. The final adjustment of the 

 outlet tunnel alignment has been made 

 and the topography up stream worked 

 out. At the Corbett tunnel, levels have 

 been run and the entire tunnel line 

 measured and checked for the purpose 

 of determining grades. The lines and 

 grades of the sluicing tunnel have been 

 established and marked on the ground. 

 The site of the lower portal of the 

 main tunnel and that of the upper por- 



tal of the sluicing tunnel were cross- 

 sectioned and about two-thirds of the 

 angles necessary for the alignment of 

 the tunnel accurately measured. 



During the past month the weather 

 in the canyon was cold and windy, 

 which retarded the work somewhat. 

 The contractors' camp, with accommo- 

 dations for about 100 men and 20 

 horses, is completed, and work on the 

 outlet tunnel is in progress. The rock 

 appears to be exceptionally hard to 

 drill and breaks out with difficulty, re- 

 quiring the use of 60 per cent dyna- 

 mite. A large boiler has been installed 

 at the upper end of the tunnel, and the 

 boiler capacity at the lower end will be 

 immediately doubled, thus materially 

 increasing the rate of progress. Two 

 daily shifts of ten hours each have 

 been occupied on the outlet tunnel and 

 the contractor has been notified that he 

 must proceed to employ three daily 

 shifts of eight hours each. Four thous- 

 and cubic yards of the excavation for 

 temporary flume and dam were finished 

 during the month, and about 2,400 

 linear feet of cottonwood logs were de- 

 livered for use in temporary construc- 

 tion : about 85 men and \2 horses are 

 employed at this point. During the 

 present month it is expected that the 

 cableway will be in operation at the 

 dam site. 



The Forest Service has 

 crnar y n pine recently placed an order 



with a firm in the Canary 

 Islands for ten pounds of the seed of 

 Canary pine. Pin us ccmaricnsis. This 

 seed will be used in experimental 

 planting in the forest nurseries in 

 southern California, where hardy, rap- 

 id-growing conifers are needed for 

 planting on the semi-arid mountains. 

 This pine is said to endure long peri- 

 ods of drought and to grow well on the 

 mountains as high as the snow line. 

 The wood resembles our common pitch 

 or Georgia pines, and apparently is 

 very strong and durable. Two tons of 

 this seed were exported to Europe last 

 year, where large plantations of this 

 tree are being made. 



