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Antarctic Icebergs. Sir C. Wyville 

 Thomson, in a lecture reported in Nature 

 for November 30th and December 7th, pre- 

 sents facts of interest obtained during the 

 cruise of the Challenger, concerning the 

 antarctic regions visited. 



The expedition met with its first ice five 

 days' sail southward of the desolate, rocky 

 group known as the Pleard Islands. In a 

 short time the ship was in the midst of 

 bergs of exquisite beauty of both form and 

 color. 



The most southerly point reached was 

 latitude 66 40' south, longitude 78 22' 

 east, when they were exactly 1,400 miles 

 from the south pole. The icebergs, some 

 of them of immense size, were tabular in 

 form, " the surface being level, and parallel 

 with the surface of the sea ... a cliff, on 

 an average 200 feet high, bounding the 

 berg. The cliffs were marked with deli- 

 cately pale blue lines a foot apart near the 

 top, closer together near the bottom ; the 

 intervening bands were white, probably 

 from containing some air. . . . The strati- 

 fications of the bergs being originally hori- 

 zontal, they were believed to be blocks 

 riven from the edge of the great antarctic 

 ice-sheet." 



A further conclusion was that the strati- 

 fication was due to successive accumula- 

 tions of snow upon a nearly level surface. 

 There was no evidence that the ice had 

 passed over uneven surfaces, nor was there 

 upon the bergs any trace of debris, such as 

 might fall from elevated cliffs. The snow 



