Index 



173 



Mitochondria, 48 



Models of outside world, 132 



Molds, 31, 64 



Morton, R. A., 116 



Miiller, H. T., 61 



Muscle, 111 



Mutation rate, effect of radiations 



on, 62 

 Mutations, 54, 61 



Mutations, produced by X-rays, 58 

 Mutations of micro-organisms, 64 

 Mutations, produced by chemicals, 



63 

 Mutation theory of cancer, 93 

 Myelin sheath, 1 1 8 

 Myoglobin, 21 

 Myosin, 112 



Nerve impulse, 119 

 Nervous circle, 122 

 Nerves, 117 

 Neurones, 143 

 Neurospara, 64 

 Newton, Sir Isaac, 1 1 7 

 Niedergerke, R., 112 

 Northrop, J. H., 24, 104 

 Nucleic acids, 42 

 Nucleus, 38 

 Nucleolus, 49 

 Oestrogens, 83 

 Oestrogens, in cancer, 98 

 Oparin^ A. L, 102 

 Optical activity, 104 

 Organizing factors, 77 

 Origin of life, 102 



PAB, 33 



Pancreas, 81 



PAS, 33 



Pavlov, I. P., 124 



Pellagra, 29 



Pen field. Sir W., \A% 



Penicillin, 33 



Peptide chains, 17 



Photosynthesis, 106 



Photosynthesis, efficiency of, 108 



Pituitary gland, 84 



Pirenne, M. H., 115 

 Pneumococcus, transformation of, 



54 

 Proteins, 16 

 Protein synthesis, 50 



Radicals, 59 

 Reduction process, 39 

 Reflex action, 123 

 Reflex, conditioned, 124 

 Replication of dna, 44 

 Respiratory proteins, 35 

 Retina, 115 

 Rhesus factor, 90 

 Rhodopsin, 116 

 Riboflavin, 30 

 Rickets, 29 

 Roentgen, W. K.,95 

 Roentgen (unit), 58 

 rna, 50 



RNA, of virus, 71 

 Rous, Peyton, 96 

 Russell, W.L.,6\ 



Salivary gland chromosomes, 56 



Sanger, F., \9 



Schramm, G., 71 



Sensations, 148 



Sense organs, 114 



Sex hormones, 83 



Shaw, G.B., 153 



Sheep disease, 36 



Shope virus, 96 



Skin grafts, 90 



Smith, Lester, 37 



Solar radiation, 108 



Stanley, W. M., 67 



Streptomycin, 34 



Strontium, radioactive, in bone, 60 



Sulphanilamides, 33 



Sumner, J. B., 24 



Superorganisms, 158 



Suprarenals, 82 



Svedberg, The, 18 



Symbols, 140 



Synapse, 143 



Szent-Gyorgyi, A., 29, 112 



