236 



INDEX 



Burettes, 42-43 



Burris, R. H., 136-138, 192 



Calibration, 35, 45-46 



Calorimeter, 38 



Capacitor, 175 



Carbohydrates, in chromatography, 



156-157 

 Cary Model 14 recording spectropho- 

 tometer, 116, 117, 118, 119, 

 123 

 Cathode ray oscilloscope, 183, 184 

 Census, United States, 49 

 Centigrade temperature scale, 38 

 Centrifugal force, 78-80 

 Centrifuges, 73, 74, 78-82 

 analytical, 80-81 

 angle heads, 79-80, 81 

 defined, 78 



sedimentation, 80-81, 82 

 types of, 81-82 

 Centripetal force, 79 

 Charles' law, 132 



Chemical Abstracts, 23, 24, 25, 227 

 Chi-square test, 207 

 Chhrella, 62, 63, 66, 70, 190, 192, 



193 

 Chloroplasts, 15, 62, 72, 74-76, 143, 

 144, 151, 157 

 frozen and stored, 74 

 preparation of fragments for experi- 

 ments, 75-76 

 separation of pigments, 143, 144, 

 151, 157 

 Chromatograms, 146-148, 150, 151, 



169 

 Chromatography, 12, 143-159, 169 

 amino acids, 143, 156, 158 

 carbohydrates, 156-157 

 column, 145-148 

 defined, 143-144 

 differential adsorption, 150-151 

 elution, 147, 153, 156 

 fraction collectors, 155-156 

 gas, 159 



Chromatography CCont.^: 



ion exchange, 153-154, 155, 156, 



157 

 lipids, 157 



liquid-liquid partition, 151-153 

 paper, 148-150, 154-155, 156, 169 

 paper electrophoresis, 157-158 

 partition coefficient, 152 

 physical principles involved in, 150- 



154 

 plant pigments, separation of, 144- 



150 

 proteins, 156, 157, 158 

 two-dimensional, 156 

 Circuit diagrams, 188 

 Colorimeter, 113, 140, 155 

 Colorimetry, 110-129. See also Spec- 

 trophotometry 

 analytical instruments, 112-117 

 concentration, measurements of, 



120-122 

 flame photometry, 128-129 

 fluorescence measurements, 127-128 

 monochromators, 113, 115-116 

 radiation detectors, 116-117 

 Compound microscope, 83, 84-86, 87, 



101 

 Conant, James B., 8 

 Condenser, 96, 175 

 Confidence limits, 206 

 Control, in experiments, 6-7 

 Corning Glass Works, 44, 45, 58 

 Correlation, 208-209 

 Cultures, 70-72 

 enrichment, 71 

 pure, 70-71 

 tissue, 71-72 

 Curie, Marie and Pierre, 163 



Data, calculation of, 190-211, 219- 

 221 

 aids, 194 



biological material, amounts of, 190- 

 191 



