50 The recent German Arctic Expeditions. 
are associated a magnetic titanic iron in segregated masses i 
b 
some size, very little of a dark brown mica, and a green min 
eral, “probably epidote. There is no chrysolite 
This feldspar has a grayish-white color, is deatieace! of irides: | : 
cence, and only careful searching reveals any striations 
‘Two analyses afford 
E il dade Mean 
Sid, 52°15 52°36 eke 52°25 
Al,O, 27°63 27°39 Stas 27°51 
Fe,0, 1:09 1:07 a 1:08 
g 92 106 oc. 99 
CaO 13°10 13°45 sae 13°22 
NaO sees Sr 3°68 3°68 
KO Sees a arace 2°18 2°18 
00°91 7 
Both analyses show that the labradorite of re region is 
remarkable for the large proportion of lime present. 
ArT. XI.—Recent German Arctic Explorations. 
1. Letter of A. Perermann, dated Gotha, Oct. 9, 1871. 
It will be remembered that the eee polar exploration bbs first 
agitated on this account ; that Captain Osborn, R. N., almost 
seven years ago, proposed a ne Ww English expedition which epee in 
view to explore the oe on region, and to reach the No ree . 
ditions, ‘tide the command of Oaytnin Kale 
Besides this, at the same time extensive ve orations, in the 
direction recommended by me, were set on foot by Dr. Dorst + and 
Dr. Bessels in ships from Rosenthal, and by Guliet Zeil and Herr 
von Heuglin out of their own means, and important results were 
BA ate aah aes ee ee, hy Nee ear Man 
