300 CARNEGIE INSTITUTION OF WASHINGTON. 



or more in order to land at Kerguelen seemed unwarranted. This was 

 f'ebruaiy 6, and in the evening a copper box, tightly sealed, containing 

 abstracts of all results to date, was set adrift on a float. The following was 

 stamped on the copper box with steel dies: 'IVIail to the Carnegie Institu- 

 tion, Washington, D. C, U. S. A., from Yacht Carnegie, February G, 1916,' 

 The float was set adrift at 8 p. m. in latitude 50° 14' S., longitude 68° 19' 

 E. The only sign of human kind seen during 4 months, except at South 

 Georgia, was a corpse floating in the open sea, about half way between Heard 

 and Kerguelen Islands, far from land. This was on February 7, at latitude 

 51° 12' S., longitude 71° 26' E. 



"On February 8 our course was set to the northward to intersect the 

 Carnegie's track of 1911, and to determine the average annual changes of the 

 magnetic elements. We made the first intersection in good time, but en- 

 countered head winds and later a calm, when attempting to make the second 

 crossing. With the aid of the engine, however, we were able to make the 

 desired point. 



"The average annual changes determined were as follows: 17' in declina- 

 tion, increasing numerically west values, as opposed to 8' shown on the charts; 

 — 2' in inclination, increasing, numerically, southerly values, and —0,0007 

 (c. G. s. units) in horizontal intensity, the value of this element decreasing. 



"The brief rest in quiet seas and in warm sunshine was very welcome, but 

 the season was advancing and we were obliged to turn southward again and 

 plunge into the dark and stormy regions of the 'roaring forties and furious 

 fifties,' The stormiest period of the trip awaited us. The heaviest gales 

 and roughest seas yet encountered were experienced, but the vessel stood the 

 strain well. 



"As the Carnegie proceeded south toward the region of Queen Mary Land, 

 the chart errors in declination constantly increased until, in the region of 

 latitude 60° S., longitude 110° E., they reached a maximum of —12° for the 

 United States and British charts, and of —16° for the German chart, i. e., 

 the charts gave values of west declination numerically too small by 12° to 16°. 



"On March 23, during magnetic observations in the afternoon, the hori- 

 zontal intensity ranged from 0,098 to 0,110 c, g. s., indicating a magnetic 

 disturbance of some kind, possibly a region of local disturbance. 



"One iceberg was seen on March 1, the only one encountered since January 

 28. Owing to the decrease in horizontal intensity and the consequent uncer- 

 tainty of the compasses, it was decided to turn to the northward on this date, 

 latitude 59° 24' S. having been reached. A few hours before the time set for 

 turning northward a south wind sprang up, so it was well that we had planned 

 to continue no farther in that direction, 



"The portion of our route extending into the Australian Bight was accom- 

 plished without special difficulty, and the latitude of 39° 29' S, was reached, 



"Going south again, the Carnegie sailed as far as latitude 57° 25' S,, obtain- 

 ing the lowest horizontal intensity that we had yet observed at sea, 0,086 

 c. G. s. Owing to conditions of weather and lateness of season, it was 

 thought best to head directly for Port Lyttelton, taking into consideration 

 the fact that we would intersect at good angles all isomagnetic lines on the way. 



"The Snares were sighted early on the morning of March 29. They were 

 almost exactly where we expected to see them, so we knew that our chro- 

 nometers were giving us nearly correct longitudes, after 4 months of hard 

 usage and with the wide range in temperature prevailing in the cabin on 

 account of the heating-stove. 



" Observations for intensity and inclination were taken every day regardless 

 of conditions, even when the vessel was hove to in a hurricane and was being 



