340 MM. C. Borgen and R. Copeland's Short Account of the 



Table showing the identification of Mr. Pogson's Solar Dark 

 Lines, and calculated places of his Solar Bright Lines, and 

 also the positions of the other known bright lines. 



1. 



2. 



Measures 



3. 



4. 



5. 



6. 



7. 



8. 



Positions 

 of known 



9. 



Frau ti- 

 ll of er's 

 letters. 



Royal 

 Society's 

 spectro- 

 scope. 



H' = 



86-2 H 

 + 1440. 



Mr. Pog- 



son's 



measures. 



P. 



P' = 



4-40 P 

 -6207- 



H" = 



379-3 H 

 + 129. 



K. 



bright 

 lines on 

 Kirch- 

 hoff's 



Reference 

 letters. 





H. 



1514 











scale. 





B 



0-86 



1513 







593 





















655 ?? 



6 



C 



125 



1548 



1547 





603 



694 



694 



Ha 



D 



2-30 

 2-85 

 352 



1 638 



1639 

 1 743 



iooo 



U62 



1001 

 1210 

 1464 



1005 

 1207 

 1463 



1014-5 



1462?? 



8 

 Pi 



E 



3-68 





1763 



1550 



1525 



1523 



1550?? 



P 2 



h 



3-97 



4-65 

 479 



1782 



1782] 

 1784/ 



1634 



1635 



1893 

 1946 



1634 



1909 

 1961 







F 



5 03 

 710 



1873 

 2052 



1873 

 2055 





2037 



2080 

 2721 



2080 

 2596 ? 



2796 



H/3 



G 



7-55 











2855 







1. The accordance between H' and P proves the commensu- 

 rability of H and P throughout. 



2. The accordance between H" and K from D to b is a mea- 

 sure of commensurability of H and K, and .*. of P and K within 

 those limits. 



3. Therefore P' within those limits is equivalent to K. 

 Bangalore, August 30, 1869. 



XLI. Short Account of the Winterings in the Arctic Regions 

 during the last fifty years. By C. Borgen and R. Copeland, 

 Astronomers and Physicists to the second German Polar Expe- 

 dition*. 



AT the present moment, when it is intended to send out a 

 second expedition to the arctic regions from Germany 

 with the purpose of wintering there, it may not be uninteresting 

 to give a short historical review of the winterings which have 



* Translated by W. S. Dallas, F.L.S., from Petermann's Mittheilungen, 

 1869, pp. 142-154. 



