280 Cross and Hillebrand—Cryolite from Colorado. 
Wohler’s analysis was entirely confirmed some years subse- 
quently by Jannasch* in Gottingen, who subjected to analysis 
pure thomsenolite selected by Professor Klein. 
In view of the above, the analysis of pachnolite by Brandl, 
showing results agreeing well with those required by the form- 
ula Nak’, CaF,, AIF, was calculated to cause no little surprise. 
a ’ 7 Z 
felt in considering the mineral to be thomsenolite, probably 
slightly contaminated with fluorite. Later, the crystalline 
* Neues Jahrbuch fiir Min., ete., 1877, p. 808. 
+ Neues Yabrbuch fiir Min., ete., 1876, p. 850. 
