66 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 65 



(B) Bernstein: H 2 and CL gases at 1 atm. (diss: Halle, 1909). I am 

 unable to find out his method, or whether his results are reliable. 



(H) K. Honda: The specific susceptibilities of the elements, and their 

 temperature coefficients, with special allowance made for ferrous impurities 

 in the specimens used (Ann. der Phys., 32, 1027, 1910). 



(W) P. Weiss and co-workers: (Papers in C. R., 150; 152; Jour, de Phys., 

 [4] 9, 1910). A summary of his whole work (Jour, de Phys., [5] 1, 900, 965, 

 1911). 



(F) E. Faytis: Complex salts, especially cobaltammines, are almost always 

 diamagnetic : molecular paramagnetism is greater in hydrated than in anhy- 

 drous salts (C. R., 152, 708, 191 1). 



(O) A. E. Oxley: Iron and Nickel carbonyls and KiFe(CN)6 are dia- 

 magnetic; K 3 Fe(CN)o is slightly paramagnetic (Proc. Camb. Phil. Soc, 17, 

 450, 1914). 



In all cases where the authors give specific susceptibilities, the 

 atomic or molecular values have been calculated for use here, except 

 where the contrary is stated : for uniformity all values are expressed 

 as xx io -6 and the I0" (5 factor is dropped. 



§20. The Magnetic Properties of the Elements 



Turning" to the structures derived for the atoms in Part II, we see 

 that the atoms of the inactive rare gases should be the most strongly 

 diamagnetic of all atoms. That this is so, with the barely possible 

 exception of H in the H 2 molecule (see below), may be seen from 

 the accompanying table. Comparing atomic susceptibilities, we find 

 that Helium (y) is more diamagnetic than any element (of another 

 group) lighter than solid Zirconium (5y + 4), while Argon (37) is 

 second only to solid Bismuth (iOy + 5). This is especially significant 

 because the gaseous state, particularly the monatomic gaseous state, 

 must be less favorable to diamagnetism than the liquid or solid state, 

 for it allows any " free " magnetons to have their fullest freedom 

 (see §22). 



The case of the H 2 molecule is difficult to deal with. The two 

 possible configurations described in §5 would correspond to very 



different magnetic properties. I * )^*» 1 <" < ■■ ~> would be 



expected to be diamagnetic, as it has no natural moment, but 

 strongly paramagnetic. On account of the 





