INDEX. 263 



Page 



Perez, L. M 189 



Peters, W. J 236 



Phillips, U. B 160 



Railway Development in Southern Territory 51 



Philologj' and Linguistics, Minor Grants 19 



Researches in 220 



Phonetics, Researches in Experimental 221 



Photography of the Sun 67 



Physics, Researches in 222-233 



Minor Grants 19 



Physiology of Genetics 128 



Minor Grants 19 



Pinacone-pinacolin Rearrangement, Studies of 44 



Pirenne, Henri 195 



Plant Breeding and Hybridization 49 



Plants, Acclimatization of 121 



Pogatscher, Heinrich 199 



Potts, C. S. 160 



Poultry, Inheritance in 31 



Pratt, J. F 238 



President's Report 15-37 



Primula, on Inheritance of Heterostylism in 45 



Pritchett, Henry S II 



Protein Bodies of the Wheat Kernel 51 



Psychiatry, Clinical Demonstrations in 48 



Psychology, Researches in 19, 234-235 



Pterophryne histrio ill 



Publication Grants 20 



Publications and their Distribution 31 



Publications Issued in 1906 31 



Pumpelly, Raphael, Trans-Caspian Expedition 59 



Pyrometry, Errors in 51, 181 



Quartz Glass 180 



Spectrograph 49 



Raasloff, H. de 132 



Radioactive Emanation in the Atmosphere, Diurnal Variation of 47 



Railway Development in Southern Territory 51 



Rain-meter, Automatic 132 



Rare Earths, Investigation of 44, 141 



Reclamation Service, Economics and Politics of 46 



Reid, H. F. 30 



Research Associates and Assistants 44 



Resistance of Air to Moving Bodies, Determination of 44 



Respiration Calorimeter, with Appliances for Direct Determination of Oxygen. . . 31 



Revertments 20 



Richard, Pierre 199 



Richards, T. \V _ 19 



Investigation of the Value of Atomic Weights, etc 154 



Riemsdijk, T. F. van 199 



Ripley, W. Z 160 



Rate Systems of Trunk Line and Southern Territory 51 



Ritchey, G. W 27, 66 



Roadway to Mount Wilson 28 



Rolfe, John C. . . _. 57 



Roman Comagmatic Region 31 



Romanes, George J 97 



Rome, American School of Classical Studies at 19, 56 



Root, Elihu II 



Root-habits 126 



Rose, J. N 133, 128 



Rowe, L. S 19 



Research Assistant 44 



