E. F. Smith— Decomposition of Chromis, iron, 199 
stance appeared to be perfectly desoreppnet, the solution was 
remove Ac ge the sat and evaporatedin a — to expel 
the large excess of moet upon the, spradual. disgp distnnearance of 
which a dark powder showeditself., The solution was st strongly 
diluted with water and filtered. The insolubje pesidue was 
thoroughly washed with hot gyater. Dried am Eva this 
weighed ‘0140 grams. 
condition. To this end the:material that h 
an impalpable powder in an, agate mortar was €le-~oted, hen 
dried and two distinct portions of 1600 grams e:ch placed in 
good hard glass tubes. To each portion was acle] 4 rather 
large quantity of bromine water_am from ten to Wave e dcppe 
af bro omine. Both tubes were heated for one day % 139° 
For two successive days the temperature was mailsined at 
170°C. At the atone of a third ga ox of i fies 
and opene 
was removed from the oven ) ape eer to I ra 
complete was to have the chiens iron in an foo: the 
The whole was pou a beaker * Sorated, 
water added and PN ag The eet was thorou ile ashed, 
dried and ignited, then transferred to a beaker an ‘pith 
dilute hydrochloric acid. The entire mass dissol¥' at 
and without a residue. The veer eatiahtd was, ierefore 
complete 
The Bitcats from the iron oxide was evaporated ‘a me 
dryness after the addition of an excess of ammonium iydrate, 
then diluted and filtered. The sokivor was reduc with 
The second tube, evel at On ng pe the fst id 
a large amount of separated ferric oxid 
off the chromium solution also dissolved very readily warm, 
dilute hydrochloric acid, oe ‘pot the least trace o° Lig e. 
ae from. this, after be mg. similarly treated Babove, 
lelded 62:83 chromium ox! 
. These results accord with those of Garrett, who an), bec 
ore from Texas, red nisi ‘ btained a about GB: cent 
same 
chromic oxide. & yey te hae ad 
