Geology and Natural History. 503 
stalactitic in form. ibaa”? greece with distinctly crystal- 
line structure also occu e zinc carbonate, which forms the 
mass of the ore, occurs somata Aistinetly crystallized Bite in 
the vitreous form called “zinkglas,” the nular massive form, 
| 
5 
Skizze der 
ves - Pia IV 1 
belsbers bei och. vi 
pearag deat sa . 0. 
Nach Grubenrissen 32 
@> bigs 
— Mhifte 
Das Scderaffirte ist Erz. 
Yi 
of the ore-deposits at the Ko oma Ge near Wi - 
h. 
och, Baden. Scale, 
Figure 1, general sketch. Figure 2, vertical section taken oo the 
2000. 
line ab (ae. 1). tau 3, vertical section taken pene the Ti line red (fig. 1 
