472 



INDEX. 



PAGE. 



Nelson, Louise A vii, 154, 156 



Newman, D. M 134, 140 



Newton, Percival A 187 



Nichols, E. L ix, 293 



on Studies in Luminescence 462-464 



Publications by 23 



Nicholson, Seth B., viii, 223, 233, 235, 236, 247, 248, 

 258, 286. 



Publications by 20, 24, 26 



Nickel and Monel Metal, Latent Heats of 



Fusion of 172 



Nicol 288 



Nolan, Owen L., Publication by 24 



Nonidez, Jose F., Publication by 23 



Norman, Sibyl 184 



North Polar Standards of Magnitude 261 



Noyes, Arthur A ix, 220, 221 



Report on Chemical Investigations 385 



Nutrition Laboratory, Report for 1921 295-306 



Nutrition, Report on Vegetable Proteins. . 432-441 

 Ocean Atmospheric-Electric Observations . . 333 



Ocean Magnetic Work 309 



Ocean-Survey Magnetic Work 317 



Officers of Institution v 



Ogawa, Chikanosuke 86, 87 



Publication by 24 



Oman, Charles 190 



One-yolk Twins in Doves, Origin and Inter- 

 pretation of 146 



Optical Glass, Manufacture of 174 



Optical Glasses, Dispersion in 172 



Optical Munitions, War-time Production of. 169 



Optical Shop at Mount Wilson 293 



Organization, Plan, and Scope of Institution x 



Osborne, Thomas B viii, 8 



Publications by 24 



Report on Vegetable Proteins 432-441 



Ovary and Uterus, Cyclic Changes in 90 



Oxygen and Water-Vapor Lines, Absence 



from Spectrum Venus 248 



Oxygen in Planetary Atmospheres 241 



Palaeography, Report on 442 



Palaeontology, Reports on 443-457 



Parallax Determinations, Accuracy of 282 



Paris Archives, Guide to Materials for Ameri- 

 can History in 180 



Park, E. A 95 



Publication by 24 



Parker, David M 189 



Parkinson, W. C vm, 311, 328, 329, 353 



on Magnetic Storm at Watheroo Obser- 

 vatory 357 



Publications by 24 



Parliament, Proceedings and Debates re- 

 specting North America 185 



Parmelee, James v, vi, xxi 



Parsons, Wm. Barclay v, vi, xxi, xxii, 32 



Pathological Specimen, Surv'ey of 96 



Paton, Stewart v, vi, xii, xxi, 32 



PauHin, CD vii, 179, 184 



Peabody, J. E 155 



Pearson, J. W., Publication by 26 



Pearson's "Product-Moment" Method 137 



Pease, Francis G., vm, 215, 216, 233, 252, 258, 274, 

 277, 279, 281, 293. 



Publications by 23, 24 



Peet, C. S 423 



Pemberton, Russell 321, 322 



Penson, Lillian 183 



Pennypacker, John Y 21, 133 



Pentose Sugars, Reduction of 62 



Pepper, George W vi 



Perisho, E. C 423 



Permanent Quadrats 407 



Perrine, J. 464 



Peters, W. J vm, 313, 316, 333, 337, 338, 347 



Pettit, Edison vm, 223, 233, 235, 286 



Publication by 24 



Phaseolus vulgaris, Vascular Anatomy of 



Normal and Teratological Seedlings of 133 



Phillips, Alexander H 191, 195 



Phillips, P. Lee 180 



Photographic and Photovisual Magnitudes 



in Selected Areas 261 



Photometric Survey of Pleiades 261 



Photosynthesis, Internal Factor in 61 



Respiration and Nutrition, Reports on 60-66 



Photosynthetic Efficiency 394 



Physical Laboratory at Mount Wilson 285 



Physics, Reports on Investigations in ... . 458-464 

 Physiology of Reproduction and Develop- 

 ment 145 



Phy togeography and Ecology, Reports on . . 66-75 



Phytometer Method, Report on 390 



Pierce, Louise F 179 



Pigeons, Tubercular Infection of 151 



Pigment-Producing and Pigment-Carrying 



Cells 80 



Pike's Peak 390, 393 



Placenta, Mitochondria in 94 



Permeability of 92 



Plant Production Quadrats 402 



Plaskett, J. S 242 



Plot Tests. Statistical Theory of 153 



Poland, Marie 123 



Pollination, Experimental 394 



Pompeo, D.J 293 



Pool, R. J., Comparative Studies of Forest, 



Chaparral, and Grassland 404 



on Significance of Transpiring Power. . . 392 



Posnjak, Eugen vii 



Powers, G. F 95 



Publication by 24 



Prediction of Egg Production in Fowl 148 



President, Report for year ending October 31, 



1921 1-27 



Prigosen, R. E 78 



Publication by 24 



Primate Fetuses, Comparative Studies on. . 97 



Pritchett, Henry S v, vi, xxi, xxii, 32 



Property Investments of Institution 14, 40 



Publication and Distribution of Results. ... 8 



Publications authorized and issued during 



Year 16 



Publications of Institution for 1921 8, 17 



Putnam, Herbert 180 



Race Mixture 145 



Racial Constitution of American Population 142 



Radial Velocities 268 



Radiation, Combined Effect of Electric and 



Magnetic Fields on 288 



Radiation from the Human Body 300 



Rats, Effect of Alcohol on Fertility of 148 



Raymond, Harry vii, 210, 213 



