338 BIOGRAPHICAL INDEX 



PILCHER, PERCY S. (1806-1899) 



PLATO (circa 427-347 B.C.) 



PLAYFAIR, LORD (1818-1898) - 



PLINY, THE ELDER (circa 23-79) 



PLUTARCH (circa 46-120) - - 



POINCARE, HENRI (1854-1912) - 



POISSON, S. D. (1781-1840) 



POPE, ALEX. (1688-1744)- 



PRESTWICH, SIR JOSEPH (1812-1896) 



PRIESTLEY, J. (1733-1804) 



PTOLEMY, CLAUDIUS (Ilrid Century A.D.) - 



PYTHAGORAS (566-470 B.C.) ... 



RAMSAY, SIR ANDREW (1814-1891) - - - 78 



RAMSAY, SIR WILLIAM (1852-1916) - 60, 61, 62, 308 



RALEIGH, SIR WALTER (1552-1618) - - 186 



RAYLEIGH, LORD (1842- . . .) - - - - - 60, 62 



REAUMUR, R. A. F. DE (1683-1757) - 69, 71, 73, 75, 119, 244 



REED, WALTER (1857-1903) - - 228 



REMSEN, IRA (1846- . . .) - - 253 



RICHTER, J. P. F. (1763-1825) - - 328 



RIGOLLOT, DR. - 114 

 RONTGEN, C. W. (1856- . . .) - 236, 301, 303, 304, 305, 306, 309 



ROSCOE, SIR HENRY (1833-1915) 182, 247 



Ross, SIR RONALD (1857- . . .) - 226, 227, 228, 233 



ROUTH, E. J. (1831-1907) - 291 



Roux, P. P. E. (1853- . . .) - 8, 216, 235 



ROWLAND, H. A. (1848-1901) - 27 



RUMFORD, COUNT (1753-1814) - - 179 



RUSKIN, JOHN (1819-1900) 92 



RUTHERFORD, SIR E. (1871- . . .) - 306, 307 



RYLE, RIGHT REV. BISHOP (1856- . . .) - 23 



i 



SACKEN, BARON OSTEN (1828-1906) - 120 



SAGE, C. LE (1724- . . .) - 176 



SANTOS-DUMONT, A. (1873- . . .) 290 



SAUSSURE, N. T. DE (1767-1845) 278 



SAVERY, T. (1650-1715) - 261 



SCHAEBERLE, J. M. (1853- . . .) 318 



SCHEELE, K. W. (1742-1786) 251 



SCHIRACH, A. G. (1724-1773) - - 71 



