The Journal of biological chemistry . ^ easy to grow and desiccate them in sufficientquantity to provide adequate material for feeding experiments. Diet Pepiod 1 Period 2 Periods Casein 18 18 18 Suqarp n n 17 Starch 52 IT 47 Salt Mixture 185 3 3 3 Butter 10 10 10 B. adhacyens 5 Wheat qepm. 5. 7dai| Fig. 1. During Period 1 the diet was adequate except in vitamin Period 2, 5 per cent of Bacillus adhcerens replaced an equivalentamount of starch. It will be noted that the loss of weight was not the third period a return to normal growth was induced by adding5 per cent of wh
The Journal of biological chemistry . ^ easy to grow and desiccate them in sufficientquantity to provide adequate material for feeding experiments. Diet Pepiod 1 Period 2 Periods Casein 18 18 18 Suqarp n n 17 Starch 52 IT 47 Salt Mixture 185 3 3 3 Butter 10 10 10 B. adhacyens 5 Wheat qepm. 5. 7dai| Fig. 1. During Period 1 the diet was adequate except in vitamin Period 2, 5 per cent of Bacillus adhcerens replaced an equivalentamount of starch. It will be noted that the loss of weight was not the third period a return to normal growth was induced by adding5 per cent of wheat germ in place of Bacillus adhcerens. Experiment 1.—In this experiment it was thought advisable totest again the organic constituents of the culture medium, and beef extract, for their content of vitamin B. Ac-cordingly, these substances were substituted for an equivalentamount ( per cent) of starch in the basal ration. Young ratsfed on these mixtures failed to grow, and weight curves, indi-cating a continuous decline, that were essentiall}^ identical withthose obtained in the original test (10), resulted. These were 898 Growth-Promoting Substances interpreted as indicating that peptone and beef extract were devoidof any significant amount of the water-soluble vita
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbiochem, bookyear1905
