T. E. Clark on Fichtelite from North Bavaria. 173 
8 crystallizing it, and hence it was necessarily impure. Rather 
than increase the confusion already existing in the nomenclature 
of these and allied substances, we shall adopt the name given 
j romeis. 
We should not forget to notice that Trommsdorff has also 
Oarbons.: + )).< be ees = 
The f 
Sil resin which we have analyzed; its crystals are also mono- 
clinic; towards alcohol, ether, and sulphuric acid it behaves the 
me; and during distillation but a small portion is decomposed ; 
but its melting point is much higher, 74° C., besides it occurs in 
another fossil pine, Peuce acerosa, Ug., and in another geological 
eenation, being as to its origin much older. 
oot Soteaaiy Its melting point is 45° C.; it distills at eA 
i Separating ; and it is also found in the buried stems of P. syl- 
tiled but the formula required by its analysis obliges us for 
mt present to consider it as another resin. 
_ ‘“Smposition, but in its melting point, 87° C., from the fossil resin 
Which we have described. / 
We have still another carbo-hydrogen resin to notice, which 
48 the first described of all these in 1827. This was ca 
Some confusion exists with regard to this fossil, from the fact 
Sink Krauss* has given the analysis of a substance under the 
hamne of scheererite, which had, it is true, been obtained from the 
— beds. of Utznach, like that described by Seomerer and 
* 
Macaire P incep, but which melts at 107° C.; 1s decomp 
, an 
3 “stillation has a composition quite different from scheerer- 
; “a8 given : ; 
: ~ Slven by Macaire Princep: pee 
: ea 
: Carbon, - - - 
: Hydrogen, - = + + + 2400 
: 
* Ann, d. Phys. u. Chem., vol. xliii, p. 141. 
