242 



INDEX 



Science CCont.^: 

 methods of CCont.^: 



explanatory statements, 7 

 hypothesis, 7 

 inductive reasoning, 7 

 observation, 5-7, 8 

 and religion, 9 

 research, 1, 4 

 Scientific method, 7-9 

 Scintillation counter, 168, 182 

 Sedimentation, 80-81, 82 

 Semiconducting materials, 174, 181-182 

 Semilog paper, 197 



Separation of parts of organism for ex- 

 periment, 15, 67, 68-69. See 

 also Chromatography 

 Servall KSA system, 82 

 Spectrometer, mass, 169-170 

 Spectrophotometers 



in chromatography, 155 

 design and construction, 113-115 

 infrared, 119, 120 

 radiation, 117, 181 

 detecting systems, 117 

 infrared, measurement, 181 

 recording, 1 16, 1 17-1 19, 123 

 ultraviolet, 119-120 

 use of, 122-127 

 Spectrophotometry, 110, 111, 113-129, 

 140. See also Colorimetry 

 analytical instruments, 112-117 

 concentration, measurements of, 120- 



122 

 flame photometry, 128-129 

 fluorescence measurements, 127-128 

 infrared, 140 

 monochromators, 113, 115-116, 117, 



128, 129 

 radiation detectors, 116-117 

 uses for, 1 10, 111 

 Spectroscope, 111, 113 

 Spikes, J. D., 75 

 Spinco Model L Preparative Ultracen- 



trifuge, 75, 82 

 Standards, for measurements, 30-34 

 direct measurement, 32 



Standards, for measurements CCont.'): 

 metric system, 3 1 

 null measurements, 32, 33 

 Statistical treatments of data, 194-198, 

 199-211,219-221 

 analysis of variance, 207-208, 219- 



221 

 application of statistics, 210-211 

 correlation, 208-209 

 mathematical, 194-198 

 mean, the, 210 

 normal curve, 201-202 

 probability, 200-201 

 probable error, 210 

 randomness, 200-201 

 range, 210 

 regression, 208-209 

 samples, parameters of, 202-203 

 standard error of the mean, 210 

 tests of significance, 203-207 

 chi-square, 207 

 confidence limits, 206 

 normal deviate, 205 

 Student's t test, 206-207 

 Statistics, 199-211 

 StauflFer,]. F., 136-138, 192 

 Strain gages, 180 

 Stroboscope, 79 

 Student's t test, 206-207 

 Style, in writing, 225-227 

 Subcellular particulates, separation of, 



73 

 Symposia, 22—23 



t Test, Student's, 206-207 

 Tables, in manuscript, 228-229 

 Tachometer, 79 



Temperature, measurement of , 38-39 

 Tests, 203-207 



chi-square, 207 



confidence limits, 206 



normal deviate, 205 



Student's t test, 206-207 



