LITERATURE OF THE SPECTROSCOPE. 181 



PARATOLUIDINE. 



Description and measurement of the spectrum of paratoluidine. 

 Hartley (W. N.). Jour. Chem. Soc, 47 (1885), 706. 



PARAXYLINE. 



Description and measurement of the spectrum of Paraxyline (Kahlbaum). 



Hartley (W. N.). Jour. Chem. Soc, 47 (1885), 707-10. 



PENTACRINUS. 



Colouring matter of pentacrinus. 

 Nature, 21, 573. 



PHENOLS. 



On a new class of colouring matters from the phenols. 

 Meldola (11.). Jour. Chem. Soc, 39, 37-40 



PICOLKNE. 



Description and measurement of the spectrum of picolene (Dr. Ramsay). 



Hartley (W. X.). Jour. Chem. Soc, 47 (1885), 719-21. 



PIPERIDIN'E. 



Description and measurement of the spectrum of piperidine (Kahlbaum). 

 Hartley (W. N.). Jour. Chem. Soc, 47 (1885), 731. 



Zur Theorie des Assimilations-processes in der Pflanzenwelt. 



Benkovich (E. von). Ann. Phys. u. Chem., 154, 408-73. 



Zur Frage uber die "Wirkung des farbigen Lichtes auf die Assimilations - 

 thatigheit der Prlanzen. 



Lommel (E.). Ann. Phys. u. Chem., 145, 442-55; Jour. Chem. Soc, 

 (2) 11, 292 (Abs.). 



Ueber den Einfluss des farbigen Lichtes auf die Assimilation und die 

 damit zusammenhiingende Vermehrung der Aschenbestandtheile 

 in Erbsenkeimlingen. 



Weber (E.). Lsuvlwirthschaftl.-Versuchs-Statistik, 18, 18-4S; Jour. 

 Chem. Soc, (2) 13, 1211-15 (Abs.). 



PURPURIN. 



Displacement of the absorption bands of purpurin in solutions of alum. 

 Morton (H.). Chem. News, 42, 207 ; Jour. Chem. Soc, 40, 488. 



