86 Observations upon the Dip of the Magnetic Needle. 



Cluallah Battoo, coast of Sumatra, on the south bank of the 

 river, near the mouth of a small creek that runs through the vil- 

 lage ; Oct. 6th, 1841. 



No. 3, 9° 11' 



No. 2, 9° 00 



Mean, 9° 05'-5 



Singapore, magnetic observatory in one of Lieut. Elliot's iso- 

 lated observing rooms, Dec. 5th, 1841. 



No. 3, . . . . . . . 12° 24'-4 



No. 2, 12°09'-5 



Mean, 12° 16'-9 



Macao, China, on the plaza or common near the water, north- 

 east side of the town, March 31st, 1842. 



No. 3, 30° 52' 



No. 2, ....... 30° 53'-4 



Mean, 30° 52'-7 



Gardens of the Morrison Education Society, west side of Monte 

 Fort. 



