1879O Relations to that of the Glacial Epoch. 5 
Sept., 1840. — In lat. 37 0 S., long. 15° E., an iceberg 1000 feet 
long and 400 feet high was met with. 
Feb., i860. — Captain Clark, of the Lightning , when in lat. 
55 0 20' S., long. 122 0 45' W., found an iceberg 500 feet 
high and 3 miles long. 
Dec. 1st, 1859. — An iceberg, 580 feet high and from 2 £ to 
3 miles long, was seen by Captain Smithers, of the 
Edmond , in lat. 50° 52' S., long. 43 0 58' W. So strongly 
did this iceberg resemble land that Captain Smithers 
believed it to be an island, and reported it as such, but 
there is little or no doubt that it was in reality an ice- 
berg. There were pieces of drift-ice under its lee. 
Nov., 1856. — Three large icebergs, 500 feet high, were found 
in lat. 41 0 S., long. 42° E. 
Jan., 1861. — Five icebergs, one 500 feet high, were met with 
in lat. 55° 46' S., long. 155 0 56' W. 
Jan., 1861. — In lat. 56° io' S., long. 160° W., an iceberg 
500 feet high and half a mile long was found. 
Jan., 1867. — The barque Scout, from the West Coast of 
America, on her way to Liverpool, passed some icebergs 
600 feet in height and of great length. 
April, 1864. — The Royal Standard came in collision with an 
iceberg 600 feet in height. 
Dec., 1856. — Four large icebergs, one of them 700 feet high 
and another 500 feet, were met with in lat. 50° 14' S., 
long. 42 0 54' E. 
Dec. 25th, 1861. — The Queen of Nations fell in with an ice- 
berg in lat. 53 0 45' S., long. 170° W., 720 feet high. 
Dec., 1856. — Capt. P. Wakem, ship Ellen Radford , found, 
in lat. 52* 31' S., long. 43 0 43' W., two large icebergs, 
one at least 800 feet high. 
Mr. Towson states that one of our most celebrated 
and talented naval surveyors informed him that he had 
seen icebergs in the southern regions 800 feet high. 
March 23rd, 1855. — The Agneta passed an iceberg in lat. 
53 0 14' S., long. 14 0 41' E., 960 feet in height. 
Aug. 1 6th, 1840. — The Dutch ship General Baron Von Geen 
passed an iceberg 1000 feet high in lat. 37 0 32' S., long. 
14 0 10' E. 
From the fadl that the ice forming the upper layers of the 
iceberg is less dense than that of ordinary ice, Sir Wyville 
Thomson estimates that as much as one-seventh part of the 
berg may be above water-line. But for the following reasons 
I am unable to agree with this estimate. It is true, as he 
remarks, that the white ice which forms the upper portion 
