14 niu.r.TiN (.;").">, u. s. department of agriculture. 



and 1915. Close relationship also existed in the Moccasin, Mont., 

 and Burns, Oreg., samples. The Archer, Wyo., samples possessed 

 high iodin values, occupying almost the same relative positions 

 during both 1914 and 1915, as did also Dickinson and Mandan, 

 \. Dak., while Eighmore and Newell, S. Dak., and Moccasin, Mont., 

 averaged constantly low. 



In the time required for drying, a close relationship exists among 

 several of the stations from year to year. The Archer, Wyo., sam- 

 ples show a comparatively uniform and short time for drying during 

 both seasons. The Newell, S. Dak., oils required a uniformly longer 

 time for drying than those from any of the other States. In both 

 of the stations there is a certain relationship between the drying 

 property and the physical and chemical properties. Thus, the 

 Archer, Wyo., samples dried the most rapidly of all. These oils 

 also possessed the highest average iodin values, high specific gravi- 

 ties, and moderately high acid values. The Newell, S. Dak., sam- 

 ple^, on the other hand, were the slowest in drying and likewise 

 possessed comparatively low iodin value, specific gravity, and acidity. 

 The Dickinson, N. Dak., samples, ranking next to those of Archer in 

 rapidity of drying, combined high iodin and acid values with high 

 specific gravity. The Highmore, S. Dak., samples, ranking next to 

 those from Newell, S. Dak., in slow-drying properties, combined 

 very low iodin values and specific gravities with high acidity. The 

 Mandan, N. Dak., samples, ranking fourth in drying property, 

 combined medium-low iodin and acid values with low specific gravity, 

 while the Moccasin, Mont., samples, ranking fifth in drying property, 

 also combined very low iodin and acid values with low specific 

 gravity. The same relationship appears, therefore, to exist between 

 the drying property and the physical and chemical properties of the 

 oils, when compared from the station standpoint, as exists when 

 comparing the varieties at the several stations. 



RELATION OF THE OILS TO THE SOURCE OF SEED. 



Discussing the relation of geographical source to yield of oil it may 

 be stated that while some variation occurs from year to year at any 

 one locality, due largely to climatic conditions, certain stations may 

 be said to produce flax showing higher average yields of oil than 

 others. The Archer, W}^o., Highmore, S. Dak., and Dickinson, 

 N. Dak., samples produced relatively high average oil yields, followed 

 by thos ■ from Newell, S. Dak., and Mandan, N. Dak., while the 

 Moccasin, Mont., and Burns, Oreg., samples produced relatively low 

 yields during the two years under observation. 



It is very probable from the results shown that the yield of oil 

 from the various flax varieties is dependent to a certain extent upon 

 the geographical location with the varying conditions of soil and 

 climate. 



