EFFECT OF SOURCE OF SEED UPON THE GROWTH 

 OF DOUGLAS FIR. 



In 1909 and 1910, the Forest Service sent seed of Douglas 

 Fir collected at different points of its botanical range to Professor 

 Schwappach at Eberswalde, Germany, and Count von Berg in 

 Livonia, Russia. Douglas Fir has attracted the attention of 

 European foresters for a number of years and many plantations 

 have been started, of which some are now as old as forty years. 

 The climatic conditions of central Europe made it, however, nec- 

 essary to be careful in selecting the source of seed, as the Pacific 

 Coast form was too tender to withstand the frosts of middle 

 Europe, while the Rocky Mountain form was too slow in its 

 growth to justify raising it in preference to the native species. 

 The European foresters, therefore, have been for a number of 

 years endeavoring to find the region from which to secure seed 

 of Douglas Fir which would possess the hardiness of the Rocky 

 Mountain form and the rapidity of growth of the Coast form. 



In 1909, the Forest Service sent to Count von Berg seed from 

 thirteen different sources as follows: 



Madison, Montana Medicine Bow, Colorado 



Absarkoa, Montana Rio Grande, Colorado 



Helena, Montana Montezuma, Colorado 



Carson, New Mexico San Isabel, Colorado 



Manti, Utah White River, Colorado . 



Targhee, Idaho 

 Boise, Idaho 

 Pocatello, Idaho 



As the seed of 1909 was of inferior quality, the Forest Serv- 

 ice sent new samples of seed collected at twelve different points 

 within its range as follows : 



Pike; Sopris; San Isabel; Pecos; Madison; Snoqualmie; 

 Bitterroot ; Lolo ; Salmon ; Colville ; Chelan ; Tahoe. 



The Forest Service requested the results of these trials, and ac- 

 cordingly Count von Berg submitted a report which is of in- 



