FOREST TREE SEED AND SEED COLLECTING 161 



factors in the cost. Kiimmel * states that the location of the ex- 

 tracting plant in District 6 at Wyeth instead of Portland increased 

 the freight charges in a single year by approximately $700. The 

 plant should be located on a level site, exposed to both wind and 

 sun and accessible to a good labor market. Arrangements should 

 be made so that the men in charge of its operation can live near 

 by. The form and size of the curing and storage sheds should 

 depend upon the volume of the cones treated and the species. In 

 general, a completely equipped plant should include the following 

 attached or closely connected rooms or buildings: 



a. Storage and curing sheds. 



6. Preliminary drying room or house. 



c. Kiln room or house. 



d. Cleaning room or house. 



e. Testing room or house. 



/. Seed-storage room or cellar. 



g. Boiler, engine, and repair house. 



In some plants the preliminary drying space is in or above the 

 kiln room, the cleaning space is in the engine and repair room, 

 the boiler is in a separate building, and the testing and storage of 

 the seed is elsewhere. 



All modern extracting plants can be reduced to two general 

 types so far as relates to the method of drying, viz., the older type 

 in which the cones are dried on a series of racks or drawers with 

 perforated bottoms in an enclosed chamber, and the newer type 

 in which the cones are dried in revolving cylinders in a heated 

 room. The economic management of either type depends pri- 

 marily upon the arrangement of the buildings and rooms in a 

 manner to eliminate hand labor to the fullest extent and the use 

 of automatic devices for handling the cones and seed. 



29. THE OLDER TYPE or PLANT FOR SEED EXTRACTION 



The Wyeth plant, erected by the U. S. Forest Service in District 

 6 in 1911, may be taken as an example of the older type. It 

 follows the design of European plants of similar type 2 (Fig. 29). 

 The storage shed has a capacity of approximately 16,000 bushels; 



1 Ktimmel, J. F.: Annual planting report, District 6. 1911. 



2 Wiebecke, Forstmeister : Die Anwendung neuen Erkennens und Konnens 

 auf die Kiefernsamendarre. (Zeitschrift f. Forst- u. Jagdwesen, S. 342-360. 

 1910.) 



