1883. ] Mineralogy. 1279 
from both European and American localities, special attention, 
however, being given to the gummite and associated minerals 
from North Carolina. After a discussion of the various analyses 
made by different chemists, and an examination of the homo- 
gummite, not entitled to distinctive names, and that uranotil is 
identical with uranophane, and should therefore be dropped as a 
mineral species. 
Both gummite and uranophane result from the alteration of 
uraninite (pechurane), and therefore very properly follow that spe- 
cies in the classification of some authors. 
MINERALS FROM LEHIGH AND Berks counties, Pa. —E. F. 
Smith and D. B. Brunner! contribute a series of analyses of min- 
erals which occur in Lehigh and Berks counties, Penna., and de- 
scribe a nmber of new localities. 
are given, 
Other minerals from Lehigh county are s¢/bite, pyrolusite and 
chlvropal, the latter being a soft yellowish green substance accom- 
es iron ore. The mineral is earthy and may be polished by 
ion. 
In Berks county, new localities and analyses are given for stil- 
bite, der weylite, vesuvianite, titanite and bructte. Vesuvianite and 
brucite were found at the now well-known mineral locality of 
Fritz island, near Reading. The latter mineral forms thin color- 
_ Tess laminz in seams intersecting limestone. 
_ Miveratocicat Notes.—In the death of Professor J. Lawrence 
Smith, at Louisville, Ky., on October 12, American mineralogy 
loses one of its most eminent masters. His memoirs on corun- 
‘um and emery, and his numerous physical and chemical investi- 
gations on meteorites, together with his many contributions to 
hemical mineralogy, have made his name well known to scientific 
1 Amer. Chem, Journ., Sept., 1883- 
