212 



TABLE 228. 



CRITICAL TEMPERATURES, PRESSURES, VOLUMES, AND DENSITIES OF 



GASES.* 



6 = Critical temperature. 



P = Critical pressure in atmospheres. 



<f> = Critical volume referred to volume at o and 76 centimeters pressure. 



d = Critical density in grams per cubic centimeter. 



a, b, Van der Waals constants in (p + ~^) ( v ~ b ) = l + at ' 



(1) Olszewski, C. R. 98, 1884; 99, 1884; 100, 



1885; Beibl. 14, 1890; Z. Phys. Ch. 16, 

 1893. 



(2) Ramsay-Young, Tr. Roy. Soc. 177, 1886. 



(3) Young, Phil. Mag. 1900. 



(4) Dewar, Phil. Mag. 18, 1884 ; Ch. News, 84, 



1901. 



(5) Ramsay, Travers, Phil. Trans. 16, 17, 1901. 



(6) Nadejdme, Beibl. 9, 1885. 



(7) Wroblewski, Wied. Ann. 20, 1883 ; Stz. 



\Vien. Ak. 91, 1885. 



(8) Batelli, 1890. 



(9) Sajotschewsky, Beibl. 3, 1879. 

 (io) Knietsch, Lieb. Ann. 259, 1890. 

 (n) Batelli, Mem. Torino (2), 41, 1890. 



(12) Cardozo, Arch. sc. phys. 30, 1910. 



(13) Kamerlingh-Onnes, Comno. Phys. tab. 



Leiden, 1908, 1909, Proc. Amst. n, 

 1908, C. R. 147, 1908. 



(14) Olszewski, Ann. Phys. 17, 1905. 



(15) Ansdell, Chem. News, 41, 1880. 



(16) Holborn, Baumann Ann. Phys. 31, 19101 



(17) Cailletet, C. R. 102, 1886; 104, 1887. 



'Abridged for the most part from Landolt and Bornstein's "Phys. Chem. Tab." 



SMITHSONIAN TABLES. 



