304 CARNEGIE INSTITUTION OF WASHINGTON. 



Page 



Patterson, W. P 59 



Pearl, Raymond, Investigation by Statistical Methods of Correlation in 



Variation 14° 



Pearl, Raymond, and Mary J. Burr, A Statistical Study of Conjugation in 



Paramecium ^5i 



Pearson, Karl. Letter on Methods for Promoting Research in the Exact 



Sciences 184-188 



Pease, Arthur Stanley 3° 



Pekin, Water Supply of 290 



Perkins, H. F., Double Reproduction in the Medusa Hybocodon protifer . 151 



Perkins, I., Marantacese of the Philippines 151 



Petroleum, Investigation concerning 58 



Phenomena of Repair in Cerebral Cortex, by C. B. Farrar 149 



Phillips, U. B 59 



Research Assistant 146 



Phonetics, Experimental 114-115 



Physics, Projects concerning 124-130 



Physiology, Projects concerning 130-134 



Piazzi's Star Observations, New Reduction of, by H. S. Davis 87 



Pickering, E. C 92, I55 



Grant from Carnegie Institution 151 



Letter on Methods for Promoting Research in Exact Sciences. 193 



Nova Geminorum before Its Discovery , 151 



Plehn, C. C 63 



Plurality of Cytolysins in Normal Blood Serum, by S. Flexner and H. 



Noguchi 149 



Plurality of Cytolysins in Snake Venom, by Simon Flexner and H. Noguchi 149 

 Polar Climate in Time the Major Factor in the Evolution of Plants and 



Animals 152 



Polistes, Coloration in 147 



Poor Lav?s, Study of 62 



Pope, A 60 



Pope, J. E 56 



Population and Immigration 55 



Potts, Charles S 56 



Pratt, Joseph H 58 



Precambrian Sedimentary Series 283 



Preliminary Communication on Infra-red Absorption Spectra of Organic 



Compounds, by W. W. Coblentz 148 



President ot Carnegie Institution of Washington, By-laws concerning. . . 14 

 Production and Properties of Anti-crotalus Venin, by S. Flexner and H. 



Noguchi 149 



Production of Sex in Human Offspring 147 



Provident Institutions, Study of 62 



Publications : 



List of 147 



Of Cold Spring Harbor Station 32 



Relating to Work Accomplished by Grantees, Bibliography of . . 148-152 



