I) K. I) \'ii)i;nsk. Sklsk. Skii., natciu . (x; math Ai d., S. H. III. 3 ÎH. A. Khami 



Pi.An; IV 



iS ,6 .7 ,8 



6,0 6.1 



VII III VI II I IV 



Pig-.IO 4686 Â (helium), (4-3) . 



continuous discharge 

 spark discharge 



contiiuious discha 



V II I 



Fijj-.U 3203 Âlhelium). (5-3). 



TW'A2 5411 Å(heli.,m).(7-4). 



T^'g-.13 6562 Å (hydrogen. H,^), (3-2). 



