. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 655 S" IS Contribution from the Bureau of Plant Industry WM. A. TAYLOR, Chief. Washington, D. C. PROFESSIONAL PAPER April 20, 1918 INFLUENCE ON LINSEED OIL OF THE GEOGRAPH- ICAL SOURCE AND VARIETY OF By Frank Rabak, Chemical Biologist, Office of Drug-Plant and Poisonous-Plant Investigations. CONTENTS. Page. Introduction 1 Varieties of 2 Factors which influence the composition o.' the oil I Plan of comparison of the oils f Yield and physical properties of the oils 5 Relation of the oils
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 655 S" IS Contribution from the Bureau of Plant Industry WM. A. TAYLOR, Chief. Washington, D. C. PROFESSIONAL PAPER April 20, 1918 INFLUENCE ON LINSEED OIL OF THE GEOGRAPH- ICAL SOURCE AND VARIETY OF By Frank Rabak, Chemical Biologist, Office of Drug-Plant and Poisonous-Plant Investigations. CONTENTS. Page. Introduction 1 Varieties of 2 Factors which influence the composition o.' the oil I Plan of comparison of the oils f Yield and physical properties of the oils 5 Relation of the oils to the source o. seed H Conclusions 15- INTRODUCTION. The cultivation of flax for the production of flaxseed and for lin- seed oil is at present receiving the most careful attention of agricul- turists as well as manufacturers. The interest in this important problem is twofold. The matter resolves itself into a problem of rehabilitation of the crop on the one hand, due to a diminishing acreage and yield of seed, while on the other hand interest is stimu- lated by the constantly increasing demand for the manufactured products with the growing scarcity of the linseed oil used in their manufacture. Practically the whole output of Linseed oil is consumed in the manufacture of paints and varnishes and other allied materials where protective coatings are desired. In view of these conditions, it is important that attention be di- rected at the present time to the improvement of the crop and the oil. The desired results can best be accomplished by a combined agronomic and chemica, investigation of the subject. The investiga- tion should embody a study of the culture of the plant for the pro- duction of seed, supplemented by a thorough study of the oil from the standpoint of yield and quality. 1 The work discussed in this paper was carriei out in cooperation with the Office of Cereal Investiga- tions of the Bureau of Plant Industry. The writer wishes to express his thanks to Mr. C. H. C
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