SCIENT. PROC. R. DUBLIN SOC, N.S., VOL. XIIL 



HYDROGEN. 



Carbon 



■ I 



PLATE XLIX. 



Gold 



I I I 



I I 



CHLORINE. 



Gold 



Carbon 



II rorci]rj^Wi|Miiin:#' ' 



l^fw»ll J- 



BROMINE. 



Gold 



Carbon 



II II I iiiiriiiii;;;ti I 'il i i 



:i iir i: 



c 

 a 



b 



IODINE. 



Gold 



Carbon 



r r:!-1!|- 



■ -TT'ir r 



I !• 



1 1 



