422 



INDEX. 



PAGE. 



Palaeography, Researches in 401 



Palseontology, Researches in 402 



Pan-Pacific Scientific Congress 162 



Parkinson, W. C 295. 296, 318 



Parliament, Proceedings and Debates respect- 

 ing North America 183 



Parmelee, James iii, iv, xix, xx 



Parsons, Wm. Barclay in, iv, xix, xx, 38 



Paton, Stewart iii, iv, xix, xx, 38, 157 



Paullin, CD 182 



Pearson, G. A 49 



Pease, Francis G. . 212, 214, 216, 220, 232, 238, 251 



Publications by 30 



Pemberton, Russell 290 



Pennypacker, John Y 139 



Pentose Sugars, Reduction and Dehydration of 64 



Pepper, George W in, xix, xxi, 37 



Permanent Quadrats 359 



Periodic Orbits, Publication by F. R. Moul- 



ton 21 



Periodicity in Vegetation 354 



Perry, T. S 305 



Peten, Archaeological Investigations at 321 



Peters, W. J 283, 285, 298, 299 



Phillips, P. Lee 180 



Photographic Magnitudes for Selected Areas 239 

 Photosynthesis and Respiration, Interrela- 

 tion of 64 



Photovisual Magnitudes for Selected Areas 240 



Physical Laboratory at Mount Wilson 256 



Physics, History of, in Nineteenth Century. . 385 



Physics, Researches in 405 



Physiology of Fecundity in Domestic Fowl . . 142 

 Physiology, Reproduction and Development 140 



Piebald Spotting in Dogs 139 



Pierce, Cornelia 182 



Pigeons, Comparative Metabolism of Sexes in 122 



Pitman, Frank W 383 



Plant Indicators, Publication by Frederic E. 



Clements 23 



Plant Production Quadrats 357 



Plant Protoplasm, Components and Colloidal 



Behavior of 53 



Plural Births 146 



Pollination, Experimental 349 



Post-natal Growth of Heart, Kidneys, Liver, 

 and Spleen in Man, Publication by 



Robert B. Bean 21 



Potato, Growth and Accumulation of Reserve 



Material in 51 



Potts, Frank A 189, 192 



on Rate of Growth of Sessile Marine 



Organisms other than Corals 197 



Poultry, Heredity in 137 



Presidency of Institution, Succession in 8 



President of Institution, Report of 1-34 



Price, Waterhouse & Co., Auditors 37 



Prigosen, Rosa E 89, 106 



Publication by 30 



Pritchett, Henry S iii, iv, 38 



Property Investments 19 



Publications, Growth and Extent of 24 



Publications of Institution for 1920 20-24 



Publications, Sales and Value of 23 



Putnam, Herbert 179, 180 



Rabbits, Heredity in 137 



PAGE. 



Radial Velocities 245 



Rapeer, Louis W 157 



Raymond, Harry 207 



Real Estate and Equipment, Original Cost. . 46 



Receipts and Disbursements of Institution. . 39 



Reed, H. S 49 



Reichert, F. L 98, 99, 100, 157 



Reinhoff, W. F 106 



Relativity, Generalized 226 



Reproduction and Development, Physiology 



of 140 



Respiration Apparatus 268 



Respiration Rate of Leaves in relation to 

 Amino-Acid and Carbohydrate Con- 

 tent 63 



Retzer, Robert, Publication by 21 



Richards, Theodore W v 



Chemical Investigations by 335 



Publication by 31 



Richmond, Myrtle L 221, 239 



Riddle, Oscar 122, 123, 124, 140, 340 



Publications by 26, 28 



Ritchey, George W 214, 220 



Ritchie, Mary 221, 233, 244 



Publications by 31 



Ritzman, E. G. . . . .' 168, 268, 272, 273 



Publication by 31 



Roberts, H. S., Publication by 31 



Rohde, Virginia 156 



Roosevelt, Franklin D 185 



Root Adaptation to Deficient Soil Aeration . . 62 



Root Development and Absorption 358 



Root Development in Grassland Formation, 



Publication by John E. V/eaver 23 



Root, Elihu Ill, IV, x, xi, xix, xx, 38 



Rose, J. N., Publication by 21 



Roth, Paul 268 



Rubber Plants 365 



Rubidium, Atomic Weiglit of 336 



Russell, I. C 402 



Russell, John 337 



Ryerson, Martin A in, iv, xix, xx 



Sabin, Florence R 97, 98 



Publication by 21 



Safir, Shelley R 331 



Salton Sea Water, Changing Composition of 75 



Saineshima, J., Publication by 31 



Sandiford, Alice 274 



Sanford, Roscoe F 217, 220, 245, 246, 250 



Publication by 31 



Sarton, George v 



on History of Science 383 



Publications by 31 



Saunders, F. A 258 



Sawyer, H. E 291 



Schultz, Adolph FI 84, 102 



Publications by 21, 31 



Scares, Frederick H., 215. 216, 220, 221, 231, 233, 

 239, 240, 241, 242, 243. 



Publications by 31 



Seashore, C. E 151 



Securities of Institution, Schedule of 43-45 



Seed Plants, Salt Requirements of 66 



Setchell, William A., on Marine Algse and 



Terrestrial Plants of Tutuila. . 185, 190, 198 

 Sevin, Gertrude 157 



