Geology and Mineralogy. 65 
Swiss Alps and Mt. Blane Chain; LPHONSE Favre 
{Geneva Archives des Sci., for Nov. 15).—Professor Favre states 
that this chart, prepared by him, shows means of colors, the 
ciers. The aut 
uses the positions of glacial scratches and of isolated bowlders, 
as well as moraines, for fixing the outlines of the old glaciers; and 
lakes, some of which were great lakes in the era of the flood from 
the melting glacier. This was the case below Soleure, where the 
waters of the Aar were stopped by four great Valaisan moraines, 
and made a lake over 60 miles long. He points out how the ma 
may be used for deducing the thickness and pitch of the glacier 
along the several valleys, and illustrates it by examples from the 
e following table contains the heights, thickness, and other 
facts connected with the glacier of the Aar, at the Ewig Schneehorn, 
of Lake Brienz; near Wimmis, where the glacier of the Simme 
cacountered the glacier of the Aar; and at Gurnigel, 10 miles 
below Wimmis. “The heights and distances are in meters; an 
4n columns 4,5 and 6 the numbers have reference to the interval 
between the cousecutive localities. 
h Surf. pitch 
LE Schn inet tered: Meier. Li pcrered Distance, Descent. for 1000 m. 
>» 2 Schneehorn,_.__ 3,000 2,747 45 
"ncaa Reet g500 tere! ome i: MOR x oe “ 
Sop eld ie pages daca r ected sg a) Bes ko 
& Wing es A A00 ibn SEO) 5 OOO. 26 5 
& a a ak oe cy, 3 634 716 nf 9 
8. Gurnigel _-- = 177 1.320 gor tpg TNO oe 
th 
Sex similar table is given for the glacier of the aoe of the 
— foir which commenced at the highest point of Saint Gothard, 
OWSs: 
AM. Jour. Sc.—Tuep Series, Vou. XXIX, No. 169.—Jan., 1885. 
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