Chemistry and Physics = s1T 
2 Es analogy with those of aluminum and indium; thongh if a 
ee the spect yi, in accordance with the periodic law, would 
r chloride prepared from pure oxide. No lines belonging to 
other elements were seen in the spectrum except two tags faint 
ones of calcium from the hydrochloric acid used, spectra 
og produced with a prism and also with a Rathod grating 
the ,460 lines to the inch, and were photieceohed with a camera, 
lens of oe as also that of the collimator tube, was 36 
i 
_ petites or the aluminum Deasge , all of which are members of 
| they are exveed- oe 
re led t to the conclusion that berpilinay 3 + 
dyad series of elements of which in all 
barium are ho mice 
ary! calcium, strontium and 
m. - Soc., » xiii, 316, June, 1883, oe 
é between the Density od the prea hag of S 
ypie states.—M jiiter—-ErzBacn 
sos necessary connection be- 
pthc 
' ete it follows that in the ease | 
is  aiiteren “ ee ces aes hes ore i 
4 7 ens 
Ser He 
