Personal and Scientific News. 
263 
Mr. Jos. Willcox and Prof. Angelo Heilprin commented 
on the evolutionary value of a collection of 308 recent and 
fossil Fulgurs from various localities and geological horizons 
presented to the Academy by the former, who claimed that 
about twenty-five species had been reduced by the presence of 
complete series of intermediate forms to three or four. 
New York Academy of Sciences. 
At the meeting of the section of geology and mineralogy of 
the New York Academy of Sciences, held March 16th, Prof. 
J. J. Stevenson in the chair, the first paper of the evening was 
presented by Mr. Heinrich Reis on A visit to the bauxite 
mines of Georgia and Alabama.” The speaker first outlined 
the occurence of bauxite in Europe and in the United States, 
illustrating his remarks by means of lantern slides. He then 
described his trip through the bauxite region of the states 
mentioned, using the same method of illustration and exhibit¬ 
ing a large series of specimens. Mr. Reis showed the associ¬ 
ation of bauxite with occasional beds of limonite and lignite 
and the frequent occurrences of white clays in association 
with the ore. In their geological relations nothing of moment 
was, however, brought to light that has not already been pub¬ 
lished by Dr. C. W. Hayes in his recent paper in the 16th 
Annual Report of the Director of the U. S. Geological Survey. 
In the discussion Mr. R. E. Dodge called attention to the close 
connection between the bauxite and the Tertiary peneplain of 
the region so that the ores are not found except at a point 
where the great fault lines of the region cut the Knox dolomite 
between 900 and 950 feet above tide as shown by Dr. Hayes. 
Prof. Kemp in discussion called attention .to the close associ¬ 
ation of limonite and lignite with the bauxite and remarked 
upon the close parallel that exists between these deposits and 
the Siluro-Cambrian iron ores of the North. In the South we 
have hydrated oxide of aluminum, with subordinate limonite. 
In the north the iron oxide is in excess while the hydrated 
oxide of aluminum is present in the somewhat uncommon 
mineral gibbsite. He also remarked upon the existence of 
lignites at Brandon, Vt., and Mont Alto, Pa. While the 
limonites of the North have been in part derived from the sul¬ 
phate of iron produced by decomposing pyrites, but little 
alumina seems to have been formed by the sulphuric acid 
which has also of necessity resulted. Prof. Kemp further re¬ 
marked that a recent article in the Engineering and Mining 
Journal of March 14th stated that the gossan of the Royal 
gold mine near Talapoosa, Ga., extended a considerable dis¬ 
tance below the present water line and he suggested that it 
perhaps indicated a recent depression which has brought the 
oxidized zone below the ground water. 
