36 



were shipped from the Fort Bayard Planting Station early in April. These seedlings 

 were planted on eight different sites, presenting a variety of exposures and soil con- 

 ditions. A recent examination of this planting shows that the loss thus far is less 

 than 10 per cent. The plantations at present appear promising, but the critical 

 period upon which the success of field planting depends throughout the Southwest 

 is unquestionably during the months of May and June. 



Forest Planting in Irrigation Projects 



Mr. Siecke has begun the study of forest planting in irrigation projects on Govern- 

 ment and private land in southern Idaho. The Twin Falls, Payette-Boise, and 

 Minidoka projects are among those which will be studied to determine the best 

 species for use in tree planting. Information thus secured will be the basis for prac- 

 tical assistance to settlers in this region. 



Possibilities of Forest Planting in Ohio and Indiana 



The study of the possibilities of forest planting in Ohio is being rapidly carried 

 forward. The northern and western portions of the State have been covered and 

 much valuable data on plantations secured. A similar study will be carried out in 

 Indiana during this month and both projects brought to completion before July 1. 

 The results of the work will be embodied in one or more circulars. 



Replies to Circular Letter (S. E.) of May 7 



The replies to this circular letter are being received. Additional information, 

 especially concerning watersheds where planting is needed to improve the flow of 

 streams directly supplying cities and towns, will be of great assistance to this Office. 

 Such information may be embodied in a letter accompanying the reply form. 



BRANCH OF PRODUCTS. 



OFFICE OF WOOD UTILIZATION. 



Timber Tests- 

 Tests made at the various timber- testing laboratories of the Forest Service form 

 the basis for the following table: 



These tests were made upon green bridge stringers. The first column of the table 

 gives the average fiber stress at rupture of the different species in the green condition; 

 the second column gives the greatest load that an average timber 5" wide, 12" high, 

 with 15' between the supports, will hold if the load is concentrated midway between 

 the supports. If, instead of being concentrated at one point, the load were uniformly 



