APPENDIX. 



293 



Analyses of Salt Water or Floe Ice, by Dr. R. D. Thompson, 

 of St. Thomas's Hospital. 



1. Analysis of the Arctic Floe in 1000 grains of Water. 



From Northumberland Sound, N. lat. 76 52', W. long. 97. 



No. 1. October 24, 1852. From the under six inc-hes of the floe. 

 No. 3. October 24, 1852. From the upper six inches of the floe. 

 Nos. 4 and 6. October 24, 1852. 



2. Composition of Floe Water, calculated from the preceding Table, 

 in grains per 1000 grains of Water. 



The water of the ice is obviously derived from land sources, but the amount 

 of common salt present among the saline ingredients shows that, in addition to 

 the natural salts which all water wluch has been in contact with the land con- 

 tains, some sea salts are intermixed. 



