58 



BULETINUL SOCIETĂŢII ROMÂNE DE ŞTIINŢE 



.GO N=rGH - 



^ G CHo 



GO. ^GH, 

 G«H.C >C< >GsH, 



n\ 



G6Î^4\ 



G N=GH. 



^G< 



(xxii); 



G 



II 

 .G. 



^G«H4 



G«Hi 



GHc 



~GH, 



Gf^4\ 



GH, 



GH2 

 ^GO 



(xxi) 



GaH4\ 



GO^ /^^Hg. 



>G< ^GqE, (XXIII). 



2 



C CH, 



II 

 NH 



