174 T. E. Clark on Fichtelite from North Bavaria. 
The inexactness of the analysis leaves much doubt as to its 
true composition. e substance was very volatile, and only 
one analysis was made. Macaire Princep himself was not satis- 
fied with the result. Since he made tlie analysis, no substance 
has been found in the coal beds of Utznach which melts at44° 
C. and distills at 90° C. ) 
e give here a table of those fossil resins to which we have 
referred, together with their melting and boiling points, and also 
the effect of chlorine, nitric and sulphuric acids on them. We 
have thought the percentage of carbon and hydrogen found 
would give a better idea of the relation of these fossils to one 
another, than their formula, for many of the latter, deduced from 
the amount of carbon and hydrogen obtained, are doubtful. 
F ] ; 
Hydro- |Melv’g' y .,. . , ‘Effect of eee i Of sulphe- 
Carbon. gen. | point. | Boiling poiut. Cyiorine,| OF Nitric Acid. | ric acid 7 
——— ae | \ __ 4 
Fichtelite by Bromeis, 87°95 1070 | 46° y leconbone unknown Unknown. unknown. 
Fiehtelite by Clark, 87-13 | 1286 | 46°C.' Above 320° C. ‘combines ee 
Tekoretin, 85° 1281 | 45°C. ‘Ofquicksitver.! do. o unknowe) 
cheererite by Haidinger, junknown unknown) 46° ne Unknown. unknown Unknown. do, 4 
Scheererite by Princep, 71°91 | 24:00 | 44°, 90° C. 0. do, blacken’d| 
Hartite, 8747 | 1204 | 74°C.) Very high. 0. ad 
Oxalic acid, w 
lloretin, 88-23 
6 
8 
do. 
87° a Ve quicksilver. combines } NO, ies Be unknow? 
Kilite by Trommsdorff,, 91:05 | 7°57 |107°.C.| 5 Ukn’n, ut anknown No effect, _[blacken"! 
: Sepp, op 
% i . *, ° |y At 4 P< . . R do. 
| Sa NO empl) | ee 
The rational formula for any one of the fossils which we have 
mentioned has not yet been determined. We onl 
i Pp 
described, for the space of one-half hour. It was then dissolved 
in alcohol and ether, and stood in the cold to crystallize. - After 
por oie several days, all the undecomposed resin crystallized 
ou 
From the mother liquor two combinations with chlorine were 
obtained, neither of which could be crystallized, though expose” 
to a cold several degrees below 0° C. The first of these com! 
nations is a clear colorless transparent oil; the other, which 1s 
of a yellowish color, we did not obtain in sufficient quanty for 
analysis, 
2 Over another portion of Fichtelite a stream of chlorine ea 
was pa for two hou This was then dissolved in alcoho! 
_and ether as the last. Two oils were obtained, neither of which 
_ “could be crystallized. The one which was first precipitated was 
. 
: 
