26 
under the name of Scheererit, which had it is true been 
obtained from the coal beds of Utznach, like that de¬ 
scribed by Stromeyer and Macaire Princep , but which 
melts at 107°C.; is decomposed by distillation, and has 
a composition quite different from Scheererit as given 
by Marcaire Princep : 
Scheererit. 
Carbon 71.91 
Hydrogen 24.00. 
The inexactness of the analysis leaves much doubt 
as to its true composition. The substance was very vol¬ 
atile, and only one analysis was made. Macaire Prin¬ 
cep himself was not satisfied with the result. Since he 
made the analysis no substance has been found in the 
coal beds of Utznach which melts at 44° C. and distills 
at 90°C. 
We 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 sul¬ 
phuric 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 formulae, for many of the latter, deduced from the 
amount of carbon and hydrogen obtained, are doubtful. 
V 
