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CHAPTER PAGE I A SENSE OF PROPORTION
THE SCIENTIST TAKES A SAMPLE
WHAT IS TRUTH?
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active already amino-acids aminobenzoic acid amount bacteria become biotin blood called carbohydrate characteristic chemist chlorine co-enzyme complete complicated compounds constituent contains converted course crystalline crystals deficiency definite diet disease effect electric electrons engine enzyme ergosterol essential evidently example existence fact factors formula function gland glucose glycogen growth haem haemoglobin heat important individual inorganic involved iodine isoprene Kilocalories kind laboratory lactic acid large number living cell material mechanical energy metabolism methods million molecular molecules muscle myosin nature nicotinic acid nitrogen obtained ordinary organic chemistry ovum oxidation oxygen particles perhaps phosphate pigment plant possible present problem produced properties protein quantity reactions relatively result riboflavin rubber sex hormones simple sodium solution species starch stepping-stones structure substances sugar suitable supply synthesized temperature thiamine things thyroxine tion tissues uric acid various virus viruses vitamin whole yeast