FREE BOOKS

Author's List




PREV.   NEXT  
|<   52   53   54   55   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   76  
77   78   79   80   81   82   83   84   85   86   87   88   89   90   91   92   93   94   95   96   97   98   99   100   101   >>   >|  
d in Broad Sound, it is preferably 150 deg. 15' 0" east. _Variation_ from azimuths taken with a theodolite at the same place, 9 deg. 48'; but the bearings on the top of the eminence showed it to be 9 deg. 0'. The variation on shore, on the _west_ side of the bay, may therefore be taken at 9 deg. 24' east. Upon Mount Westall on the east side, and at the south end of Leicester Island, it was from the bearings 8 deg. 50'. Upon the small islet at the head of the bay, 9 deg. 25'. At our anchorage on the west side of the bay, Mr. Flinders took azimuths when the ship's head was S. E. by E., which gave 6 deg. 31' by one compass; before he had done, the ship swung to the flood tide with her head W. N. W., and two other compasses then gave 11 deg. 27' and 11 deg. 4': the mean corrected to the meridian, will be 8 deg. 46' east. At an anchorage towards the east side of the bay, the same officer observed the variation with two compasses, when the head was east, to be 4 deg. 49', or corrected, 7 deg. 21' east. The difference in Strong-tide Passage, where the land was one mile to the south-south-east on one side, and the same to the west on the other, was still more remarkable; for when the head was N. E. by N., an amplitude gave me 9 deg. 10', or corrected, 10 deg. 34' east. There might have been an error in any of the ship observations of half a degree; but I am persuaded that the attraction of the land, sometimes to the east and sometimes west, as the ship was near one or the other side of the bay, was the great cause of the difference in the corrected results; and it will presently be seen, that the effect on a neighbouring part of the coast was much more considerable. CHAPTER III. Departure from Shoal-water Bay, and anchorage in Thirsty Sound. Magnetical observations. Boat excursion to the nearest Northumberland Islands. Remarks on Thirsty Sound. Observations at West Hill, Broad Sound. Anchorage near Upper Head. Expedition to the head of Broad Sound: another round Long Island. Remarks on Broad Sound, and the surrounding country. Advantages for a colony. Astronomical observations, and remarks on the high tides. [EAST COAST. THIRSTY SOUND.] SATURDAY 4 SEPTEMBER 1802 At noon September 4, when the botanical gentlemen returned from their excursion to Pine Mount, we made sail out of Shoal-water Bay with a breeze from the eastward. In steering north-west amongst the small islands, the soundings were between
PREV.   NEXT  
|<   52   53   54   55   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   76  
77   78   79   80   81   82   83   84   85   86   87   88   89   90   91   92   93   94   95   96   97   98   99   100   101   >>   >|  



Top keywords:

corrected

 
anchorage
 
observations
 

compasses

 
difference
 
Remarks
 
Thirsty
 

excursion

 

variation

 

azimuths


Island
 

bearings

 

results

 

Anchorage

 
Observations
 
presently
 

nearest

 

CHAPTER

 

considerable

 
Magnetical

Departure
 

Northumberland

 

Islands

 

neighbouring

 
effect
 

botanical

 

gentlemen

 
returned
 

breeze

 
eastward

soundings
 

islands

 

steering

 

September

 

surrounding

 
country
 

Advantages

 

colony

 

Expedition

 
Astronomical

remarks

 

SATURDAY

 

SEPTEMBER

 

THIRSTY

 
Flinders
 

Leicester

 

compass

 
Westall
 

Variation

 

theodolite