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Overseas touring exhibitions
792
U.S.
BUREAU OF CHEMISTRY NOTES.
[J. F.I.
ing with ferric sulphate and distilling the liberated iodine with steam. The iodine may be absorbed in a potassium iodide solution and titrated with thiosulphate. The results for iodine obtained by this method are not as accurate as those obtained by the permanganate method (J. Ind. Ency. Chem., II, 1919, 563). The residue in a distilling flask is emptied into a beaker, heated to boiling, and the iron precipitated with ammonia or sodium hydroxide. The iron hydroxide is removed by filtration and washed with hot water. The filtrate, is evaporated to dryness, or nearly so, and the bromine determined in the residue by the chromic acid method (J. Ind. Eng. Chem., II, 1919, 954). Results of determinations of from o.04 to o.o8 gram of iodine as iodide and from o.ooi to o.I gram of bromine as bromide in the presence of IO grams of sodium chloride are tabulated.
STUDIES IN NUTRITION. III: THE NUTRITIVE VALUE C O M M E R C I A L CORN G L U T E N MEAL."
OF
By Carl O. Johns, A. J. Finks, and Mabel S. Paul.
[A~S~RACT.] COMMERCIAL ,corn gluten meal has been shown to contain adequate proteins for normal growth, but it is lacking in watersotuble vitamines. This deficiency, however, was corrected by the addition of either 3 per cent. of dried brewer's yeast or 18 per cent. of whol,e gound yellow cornmeal. The addition of cocoanut press-cake to the corn gluten meal furnished the necessary water-soluble vitamines, as well as a very efficient mixture of proteins.
Overseas Touring Exhibitions. (Electrician, March 26, I920.) - - F o r the purpose of bringing British goods to the attention of foreign countries, four traveling exhibitions will be arranged. The first will leave England in June of this year and will return two years later after having visited South Africa, Australia, New Zealand, and Canada. Three other tours will go to the United States, the Far East, and South America. The displays are to be on view for about two weeks in each city where a halt is made. G. F. S.
Published in J. Biol. Chem., 4I (192o), 391-399.
U.S.
BUREAU OF CHEMISTRY NOTES.
[J. F.I.
ing with ferric sulphate and distilling the liberated iodine with steam. The iodine may be absorbed in a potassium iodide solution and titrated with thiosulphate. The results for iodine obtained by this method are not as accurate as those obtained by the permanganate method (J. Ind. Ency. Chem., II, 1919, 563). The residue in a distilling flask is emptied into a beaker, heated to boiling, and the iron precipitated with ammonia or sodium hydroxide. The iron hydroxide is removed by filtration and washed with hot water. The filtrate, is evaporated to dryness, or nearly so, and the bromine determined in the residue by the chromic acid method (J. Ind. Eng. Chem., II, 1919, 954). Results of determinations of from o.04 to o.o8 gram of iodine as iodide and from o.ooi to o.I gram of bromine as bromide in the presence of IO grams of sodium chloride are tabulated.
STUDIES IN NUTRITION. III: THE NUTRITIVE VALUE C O M M E R C I A L CORN G L U T E N MEAL."
OF
By Carl O. Johns, A. J. Finks, and Mabel S. Paul.
[A~S~RACT.] COMMERCIAL ,corn gluten meal has been shown to contain adequate proteins for normal growth, but it is lacking in watersotuble vitamines. This deficiency, however, was corrected by the addition of either 3 per cent. of dried brewer's yeast or 18 per cent. of whol,e gound yellow cornmeal. The addition of cocoanut press-cake to the corn gluten meal furnished the necessary water-soluble vitamines, as well as a very efficient mixture of proteins.
Overseas Touring Exhibitions. (Electrician, March 26, I920.) - - F o r the purpose of bringing British goods to the attention of foreign countries, four traveling exhibitions will be arranged. The first will leave England in June of this year and will return two years later after having visited South Africa, Australia, New Zealand, and Canada. Three other tours will go to the United States, the Far East, and South America. The displays are to be on view for about two weeks in each city where a halt is made. G. F. S.
Published in J. Biol. Chem., 4I (192o), 391-399.