13 
resin occurs which melts at 45 0 or 46 0 -C. — viz. Fich- 
telit described by Bromeis from Redwitz, Scheererit (?) 
by Haidinger from Utznach, and Tekoretin by Forch- 
hammer from Holtegard. 
The relation which they bear to one another, through 
their actual composition , wi 1 ! be noticed later. 
We have still another locality to mention where a 
fossil resin is found, from the fact that this fossil, which 
was analyzed by Schrotter was considered by him to 
be very similar to Scheererit and to have the same 
composition as Tekoretin. 
In 1841 Haidinger 2 discovered a fossil resin re¬ 
sembling Scheererit in the brown coal beds of Oberhart 
not far from Vienna. One part of these beds contains 
numerous stems of a sort of pine tree, which are pre¬ 
served either as bituminous, or as petrified wood i. e. 
quarz in the form of wood. 
In the different layers and cross breakings of these 
stems the resin which is called Hartit is found. 
These coal beds have at present an inclination of 
70°, and are considered to belong to the tertiary for¬ 
mation. 
The pine wood in which the resin occurs was exa¬ 
mined by Unger 3 and pronounced to belong to the 
species Pence acerosa Ug., which is very common in the 
brown coal formation. Hartit, which was analyzed by 
Schrotter , melts at 74 0 C. 
1 Ann. d. Phys, u, Chem. Vol. LIX, p. 37. 
2 Ann. d, Phys. u. Chem. Vol. LIY, p. 261. 
3 Ann. d. Phys. u. Chem, Yol. LIX, p, 41. 
