JOHNSTON: ELASTIC BEHAVIOR OF METALS 



263 



mined by Tammann, Verigin and Levkojeff 3 for a series of metals. 

 Arranged in the order of decreasing ease of flow, the metals follow 

 in the order K, Na, Pb, Tl, Sn, Bi, Cd, Zn, Sb, a sequence which 

 is identical with that deduced thermodynamically and presented 

 in Table 1. But not only is the sequence of <p values identical 

 with that of the flow pressure, it is practically identical with the 

 sequence obtained when the metals are arranged in the order of 

 any of their elastic properties for which measurements have been 

 made. This is shown by Table 2, in which have been brought 



TABLE 2 

 Relative Values 4 of the Elastic Constants of Metals 



(a) As given by Richards and collaborators, J. Am. Chem. Soc, 31 : 156. 1909. 



(&) According to Rydberg, L.-B.-M. Tabellen, p. 57. 



(c) L.-B.-M. Tabellen, p. 53. 



Id) Wertheim (1848) quoted by Faust and Tammann, Z. Physik. Chem. 75: 

 118. 1911. 



(e) L.-B.-M. Tabellen, p. 53. 



(/) As determined by Faust and Tammann, loc. cit. 



(g) (h) General mean of the (sometimes very discordant) values given in. 

 L.-B.-M. Tabellen, pp. 43-45. 



(i) Horton, Phil. Trans. Roy. Soc. London, A, 204. 1905. 



3 Ann. Physik, 10: 649. 1903. 



4 It is to be noted that the values given in the table are relative only, and are 

 not always expressed in the same units (e g., columns c and d, e and/, h and 1 1, 



