538 



jVA ture 



I also pointed out the close relation of hyrirojjen to 

 calcium, magnesium, and other metals (it was on this 



[Aiiai, 6, 1899 



Academy of Sciences was thus concluded by M. 

 Dumas : 



/ .7 0^7 V 



ARC ANGSTROM 



SPARK THALEN 



20 IFREQUENCIES 



59 SUN SPOTS 



,J KENSINGTON 



I FREQUENCIES 



ground that I had named the substance which gave U'. I " En resume, quand je soutenais devant TAcaddmie 

 which always varied with hydroycn, helium 1, and the | que les elements de Lavoisier devaient ctre considdres, 



Fl... 8.— Dillcrcnl r.ilcs 



I rcgislci-cd by ditV.- 



absence of all other terrestrial gases from the solar I ainsi qu'il avail etabli lui-meme, non comma les dldments 

 spectrum. An interesting discussion at the Paris | absoliis de I'univers, mais comme les elements reladfs de 

 NO. 1536. VOL. 59 1 



