558 BIOGRAPHICAL INDEX 



NERNST, W. Atomic heat of carbon, 366 

 NERNST AND WARTENBURG 



1906. Dissociation of steam, 535 

 NEUMANN, FRANZ ERNST (1798-1895) 



1831. Molecular heats of compounds, 367 

 NEWLANDS, J. A. R. 



1864. Relations between equivalents, 454 ; missing elements, 



454 



1865. The law of octaves, 456 ; atomic weight of beryllium, 



474, indium, 475, and uranium, 475 ; multiples of 

 oxygen, 483 



1878. Atomic numbers, 456, 485 

 NEWTON, SIR ISAAC (1642-1726) 



1704. Diamond combustible, 99 ; On atoms, 292, 389 

 NICHOLSON AND CARLISLE 



1801. Water decomposed by electrolysis, 272 

 NILSON, LARS FREDRIK (1840-1899) 



1879. Discovery and properties of scandium, 477 

 1884. Vapour-density of beryllium chloride, 475 



1888. Vapour density of ferrous chloride, 361 



1889. Vapour density of aluminium chloride, 361 



ODLING, WILLIAM 



1855. Multiple types and mixed types, 429; graphic repre- 

 sentations of substitution-values, 436 



1864. Perissads and artiads, 442 



1865. Vapour-density of aluminium, methyl and ethyl, 361 



PEBAL, LEOPOLD VON (1826-1887) 



1862. Dissociation of sal-ammoniac, 521 

 PELLETIER, BERTRAND, b. 1761, Bayonne ; d. 1797, Paris. 



1785. Preparation of phosphorus, 177 



Preparation of baryta, 141 



PELOUZE, THEOPHILE JULES (1807-1867) 



1843. Prout's hypothesis modified, 485 

 PLAYFAIR AND WANKLYN 



1862. Vapour-density of acetic acid, 522 ; nitrogen peroxide, 

 524 



PRIESTLEY, JOSEPH, b. 1773, near Leeds; d. 1804, North- 

 umberland, U.S.A. Priestley's papers, many of which appeared 

 first in the Philosophical Transactions of the Royal Society, were 

 published in six volumes as follows : Experiments and Observa- 

 tions on different kinds of Air, Vol. I. (1774), Vol. II. (1775), 



