- 11 - 
like silk, and the petals of the flowers provide a yellow color 
for dyeing. The leaves may he used in the treatment of asthma 
instead of stramonium (thorn apple). 
Rolet, Ant on in. <■' Le tournesol, ses graines et son huile. La Vie Agricole 
et Kurale, 13.annee, t. 25, no. 35, pp. 140-143. Aug. 30, 1924. 
14 V67 
Contains the same information as the article "by the same author 
cited' above. 
Ross, A. 1.1. ' Seme morphological characters of Helianthus annuus L. , and 
their relationship to the yield of seed and oil. Sci. Agr. c Canada: 
19(6): 372-379. • Feb. 1939. 7 Sci2 
"Sunflower seed contains an extremely high percentage of vegetable 
oil which is used extensively in the manufacture of various food 
products. After the oil has been extracted, the remainder o.f the 
seed is utilised as a cattle feed and for this purpose is conparable 
with linseed cake both in nutritive value and in palatability. 
Unfortunately, no statistics are available to show the amount of 
sunflower oil which is annually imported into Canada." Results of 
an experiment at the Central Experimental Farm, Ottawa, are given, 
showing the correlation- obtained between the percentage of oil in 
the seed and the yield of seed, and various . factors., studied. 
Factors affecting the oil percentage and the yield of seed are 
discussed. 
Sessous, G. Entwicklung und bedeutung des olfruchtaribaus in Deutschland. 
Fette und Seifen 47(l): 10-12. Jan. 1940. 384 C422 
Contains a table giving the fat and protein content, of. a number 
of oil seeds including sunflower seeds.- . ... 
Sever in, Q. Sunflower seed and sunflower oil. In International insti- 
tute of agriculture. Studies of principal agricultural products of 
the world market, no.' 4. Oils and fats: Production and inter- 
national trade. Pt. I, pp. 77-39. Rome, 1939. 280.39 In8 
Three varieties of sunflower are distinguished, the wild sun- 
flower being native to America and the ornamental sunflower having 
been discovered in Central America. The seeds were imported into 
Europe from Central America in the sixteenth century. They were 
used first in confectionery and as coffee substitutes in the seven- 
teenth century. And towards the middle of the nineteenth century 
the oil was first extracted in Russia. 
The uses of sunflower products are enumerated as follows: "(l) 
the seeds.. .are used for the extraction of edible or industrial oil; 
(2) sunflower oil is largely employed in the manufacture of margarine 
and compound lard; it is an oil of low drying capacity; (3) the seeds 
of certain varieties are also consumed baked, especially in the 
IT. S. S. R. ; (4) the refuse of oil extraction, cake and meal, rich 
in protein and fatty matter, are used especially as concentrated feed 
