!890.] the Validity of Persons Absolute Zero. 21 



Table B. Comparison of Values from various sources. 



P. = Pickering. 



M. = Marignac ('Lieb. Ann.,' Suppl. 8, p. 355). 



Pf. = Pfaundler ('Jl. Prakt. Chem.,' vol. 101, p. 608; and 'Berlin Berichte,' 



1870, p. 798). 



Per. = Person (' Ann. Chhn. Phys.' (3), vol. 33, p. 446). 

 K. = Kopp ('Pogg. Ann.,' vol. 75, p. 98). 

 B. = Berthelot (' Compt. Eend.,' vol. 78, p. 716). 

 A. = Alluard (' Ann. Chim. Phys.' (3), vol. 57, p. 438). 

 S. = Schiiller (' Pogg. Ann.,' Erganz. 5, p. 125). 

 Pet. = Pettersson (' Jl. Prakt. Chem.,' vol. 24, p. 129). 

 E. = Eegnault (' Mem. de 1'Acad.,' vol. 26, p. 262.) 



* This is deduced from Alluard's values for ranges from 0'5 to 19, and 20 

 to 65. 



f From Alluard's values for ranges from 26 to +7'7 and 0'5 to 19; to the 

 former of these, however, he attached less value than to those for higher tempera- 

 ures. 



J Pettersson's value was obtained with benzene freezing at 4'97. 



