Index 



331 



PAGE 

 Plants : 



Binomial nomenclature 

 of - - 239 



Classification of, natural 

 system - - 245 



Physiology of - 237, 249 

 Playfair, J. - 70, 131, 310 



Playfair, L. - - 202 



Pliny - 216, 217, 257 



" Poikilitic " - - 316 



Poisson - - 20 



Polarization of heat - - 133 

 Polarization of light - 19, 147 

 Pond, J. - - 60 



Potassium, discovery of - 113 

 Potential - - - - 123 

 Poynting, John 152, 160, 161 



Powell, J. Baden 121, 140, 141 

 Prestwich, Sir J. - 317, 319 

 Prevost - - 156 



Priestley, J. - - 14, 84, 238 

 Pringle, Sir J. - - 204 



Pritchard, C., astronomical 



research - 141 



Pritchard, M. - - 274 



" Principia " - 10 



Professorships : 



Dates of foundation - 46 

 Proteaceae - 244 



Prout, W. - 181 



Pullen, Capt. - - 291 



Pump, air - - 75, 181 



Turbine - - 151 



Pythagoras 8 



Quaternions 



137 



Radiation of heat, see under 



Heat. 



Radio-activity - - 183 



Radiometer - 151, 180, 181 

 Radium, discovery of 183, 184 

 Rainbow, explanation - 120 



PAGE 



Ramsay, Sir W. - 181 



Ramsden, J. - 81, 97 



" Ramsden's eyepiece " - 97 

 Rankine, W. J. M. - - 134 

 Ray, J. - 231, 233, 259, 261 

 Rayleigh, Lord - 122, 159, 164 

 Discovery of argon - 181 

 First step in colour photo- 

 graphy - - 173 

 Refraction, see under Light. 

 Renal oncometer - - 306 

 Respiration ' "V''. - 296 

 Reinold, A. - - - 160 

 Reynolds, O. - 23, 26, 150 

 Rhodes, Cecil - - 168 

 Rhodium, discovery of 145 

 Rickets - - 297 

 Roberts, I. - ^ - 170 

 Robison, J. - - 65, 68, 81 

 Rocks, arrangement in layers 309 

 Roebuck, J. - - 194 

 Roemer, O. 62 

 Roentgen, W. C. - 183 

 Romanes, G. J. - - 285 

 Ronalds, SirF. - 187, 188, 209 

 Roscoe, H. E. - - 149, 150 

 Ross, Sir James - 288, 289 

 Ross, Sir John - - 289 

 Rosse, Lord - - 169 

 Routh, E. J. - - 127 

 Roy,Maj.-Gen. - - - 207 

 Roy, C. S. - 306 

 Royal Astronomical Society 



208, 212 

 Royal College of Chemistry 



194, 199 



Royal College of Physicians 265, 

 294, 295 



Royal College of Surgeons 265, 283 

 Royal Institution, founda- 

 tion - - 109, 213-4 

 Royal Society - 51,77,203-213 

 Royal Society of Arts - 211 

 Royal Society of Dublin - 211 

 Royal Society of Edinburgh 211 

 Rubber, commercial produc- 

 tion of - - 190 

 Rucker, A. - 160 

 Rumford, Count 27, 107, 108, 213 



