342 MAGNETIC SURVEY OF A PART OF THE SOUTHERN HEMISPHERE. 
“ 1 1. General Remarks . — You cannot do better than follow the admirable example 
of the Antarctic Expedition, in observing the three magnetic elements on board every 
day on which the weather will permit you to use the instruments. 
“ 12. Frequent reference has been made in these instructions to the importance of 
at least one opportunity of observing on shore or on the ice in a high latitude, for 
various objects connected with the reduction and correction of the whole body of 
magnetic observations made during the voyage. If Enderby’s Land, or land con- 
nected with it, should not be accessible, it is by no means necessary that the ship 
should enter the ice in order to give you the opportunity of landing on a piece of ice 
of sufficient magnitude. A favourable day being chosen, she may approach the ice 
sufficiently near, and remain four or five hours, whilst her boat takes you to make the 
observations and to return. 
“ If the ice be not ‘ fixed’ you must be careful to detect an azimuthal motion, should 
there be any, by which the inclination circle might otherwise be removed from the 
plane of the magnetic meridian without your being aware of it. You will also take 
care that the magnetic instruments are sufficiently distant from the boat. 
“ Edward Sabine.” 
“ Woolwich.''' 
The Pagoda sailed from the Cape of Good Hope on the 9th of January, proceed- 
ing, pursuant to instructions, towards the Antarctic Circle in the meridian of Green- 
wich. She crossed the 60th parallel in the longitude of 4° east, and being impeded 
by ice in her direct progress to the southward, coasted its margin to the south-east, 
and attained her greatest southing on the 10th of February in latitude —68° 10' and 
longitude 35°. She was then according to the chart in the vicinity of the western 
extremity of Enderby’s Land, but from strong south-east gales and the position of the 
ice was unable to approach it sufficiently even to see the land : from thence she con- 
tinued a general progress to the eastward, keeping in as high a parallel as the ice 
and weather permitted. On the 10th of March she had obtained the 96th degree 
of east longitude in about the 60th degree of latitude, when the season was con- 
sidered to be so far advanced that it would not be prudent to persevere in the com- 
pletion of the survey in the high latitudes; and a course was therefore taken for 
Iviug George’s Sound in Australia, where the ship arrived on the 1st of April. During 
the whole of this voyage observations of the three magnetic elements were made 
twice in each day, except in extreme circumstances of weather, by Lieut. Moore in 
the afternoon and Lieut. Clerk in the forenoon, each being furnished with a sepa- 
rate (Fox’s) apparatus for the Inclination and Force; and on the arrival of the ship 
at King George’s Sound, the two instruments were found to give an almost identical 
value for the intensity of the force, the results being by Lieut. Moore’s Fox r680, 
and by Lieut. Clerk’s P688. 
