a eee 
T. E. Clark on Fichtelite from North Bavaria. 175 
of a deep yellow color and perfectly clear; the other was of a 
dark red color. There was too little of the latter for analysis. 
For determining the amount of chlorine and bromine con- 
tained in the oils obtained, the combustions were made with 
caustic lime. For determining the amount of carbon and hy- 
drogen simply chromate of lead was used, having the combus- 
tion tube longer than usual. 
Before giving the results obtained, I must remark that it is 
more fortunate than I have been in forming crystalline combi- 
h 
nations of this resin with chlorine and bromine. 
First chlorine combination. 
I 04192 grm. of substance gave 
11868 “ carbonic acid and 
IL 06903 “ of substance gave 
03156 “ chlorid of silver. 
Hence 
Calculated. Found. 
Oso = 555 47-218 
Her == 10-987 11178 
Ck = 11-458 1F3 
Second chlorine combination. 
I 039338 grm. of substance gave 
10018 “ carbonic acid and 
03443 “ water 
IL 05411 “ of substance gave 
Hi 04432 “  chlorid of silver. 
_ ence 
Calenlated. Found. 
Cao = 9-783 69°483 
Hes = 9°595 9-726 
Ch = 20°621 20-250 
y In order to obtain bromine combinations, the resin was acted 
Pon ®y bromine as previously described, and dissolved in alco- 
nd ether. After standing several days in the cold most of 
© ume below 0° C, the undecomposed substance had entirely 
tallized out. By treating the mother liquor as in the case of 
chlorine compounds, two oils were obtained: one of a light 
<olor and pertectly clear, the other dark red and much more 
“onsistent, 
“ 
