288 CARNEGIE INSTITUTION OF WASHINGTON. 



The latitude as given for Gough Island seems to be in error by 3'. 4, 

 our observations giving 40° 15'.8 S., instead of 40° 19'. 2 S., els shown on 

 British Admiralty chart No. 2228, for Penguin Islet. 



St. Helena was reached on March 27, after a remarkable trip of 35 

 days, dming which the daily run averaged 151 miles. During the 

 7 days at St. Helena the Department's magnetic station at Longwood 

 was reoccupied. Several trips over the island were taken by the party, 

 during which the various places of historic interest were visited. After 

 fresh water and supplies were taken on board, the Carnegie sailed for 

 Cape Town on April 3. 



After 3 days of sailing in the southeast trade- wind, the region of 

 variable winds and calms was entered. Considerable lightning accom- 

 panied by heavy thunder was noted during some of the heavy squalls 

 encountered in the middle of the South Atlantic, far from land. The region 

 of the westerly winds and storms was reached on April 11. Tristan da 

 Cunha Island was sighted on April 15. 



The usual cycle of atmospheric-pressure changes, with their corre- 

 sponding storms and changes in the direction of the wind for these 

 regions, was experienced. With high pressure northerly winds blow, 

 shifting to northwest and west as the pressure decreases. The more 

 rapid the decrease, the stronger the wind blows. At the lowest pr essui e 

 point the wind shifts to southwest and blows hard if the pressure 

 increases rapidly, shifting to south and southeast as the pressure rises, 

 finally jumping to northeast and north as the highest pressure-point is 

 reached. 



Cape Town Harbor was entered on April 24, after 21 days at sea, 

 during which the high average of 152 miles per day was made. Here 

 the usual intercomparison of instruments was made at the Depart- 

 ment's former station near the Royal Observatory. Considerable 

 repair work to the vessel was undertaken. The decks and outside of 

 the vessel were recaulked, the two ranges were overhauled and rebuilt, 

 and various repau'S were made to the plumbing. 



The people of Cape Town made the stay of the party very pleasant 

 by their generous hospitality and by the many courtesies extended. 

 The port authorities granted all privileges to the Carnegie during her 

 stay, and various exemptions were made by the government officials 

 in the matter of payment of towboat charges, customs dues, and immi- 

 gration regulations. Opportunity is here taken to make grateful 

 acknowledgment of these many courtesies. 



On May 20 the Carnegie sailed for Colombo, this port having been 

 substituted for Aden in the revised route instructions. During this 

 trip four strong gales were encountered and the winds between in 

 general were strong. The vessel spent 19 days in the region of the 

 "westerlies," after which the southeast trade-wind was picked up, 

 with a few hours of calm intervening. After one week in the southeast 



