422 
> Wybren n 
as | | -— Const  Soubilels 
Fe 
L 
me 
en ae 
iS a 
eG es 
| | ! ! 
| eae, EME ee | 
Lt ye zi i i 
de > ay ae Laghv 
Fig. 2. 
1,224.10-5: these values, therefore, on the assumption that these 
magnitudes are constant, will give the closest possible agreement 
with the experimental thermal equation of state, at least for the 
planetary gas state, at the particular temperature under consideration, 
which is here found to be 106° K. 5 ?). 
1) The values of ayx and bwx given by Braak, Diss. Leiden 1908, p. 82 were 
obtained by a method of calculation which is essentially the same as the log B, 
lg C-method of Suppl. No. 23, Nr. 38, applied to the comparison of hydrogen with 
a fictitious standard with constant ay and by. The difference belween these and 
the results obtained by the log B, dlog B/d log T-method here, show that 
complete correspondence does not exist between hydrogen and the fictitious standard 
with constant aw and by even over a limited temperature region, if one is not 
confined to the planetary state. 
2) The deduction of similar values of aw and bw for other temperatures which 
might be followed by the development of deviation functions as for instance 
indicated in Suppl. No. 23, Nr. 38, was not made. 
