142 
LIEUT.-COLONEL SABINE ON TERRESTRIAL MAGNETISM. 
1839, on the beach at the arsenal, in a line between the Custom-house and the outer 
rocky point : the sand is about twenty feet deep. 
Oahu. In 1837, in a room used as an office by Mr. J. Coffin Jones. In 1838, in 
a house belonging to Mrs. Holmes ; both well-known places. 
Socorro Island. On the cliff. 
Clarion Island. On the sandy bank above the beach. 
Acapulco. Near Fort San Carlos, outside the gate. 
Realejo. On the N.W. high cliff of Cardon Island ; rocks basaltic. 
Panama. Near the ruins of the convent of San Francisco. 
Magnetic Island. A small islet. 
Sampanchow Island. Near Chuenpee, on a beach composed of coarse quartz sand. 
Hong Kong. Near the harbour, on granite rocks. 
Macao. In the garden of the house belonging to Messrs. Leslie and Dent. 
Cocos Island. At the landing-place. The observations in 1838 were made under 
unfavourable circumstances. 
Manila. Two positions ; one at the house of Mr. Strachan, which did not afford 
very satisfactory results : the second on the mole head ; an entire failure, owing pro- 
bably to iron clamps used to bind the masonry. 
Puna Island. On various points of the island. 
Ascension Island. On the N.W. sandy beach. 
Penang. In the garden of the Admiralty-house. 
Malora Island. Called Bouro Island by the natives : it is volcanic. 
Acheen Island. On the sandy point about 100 yards north of the flag-staff. 
Callao. On the Plaza de los Muertos. 
Point de Galle. On Utrecht bastion, behind the magazine. 
Malacca. Near the small saluting battery. 
Singapore. In 1840, under a covered landing in front of the Recorder’s house, 
being the position of the French expedition, the Astrolabe and Zelee. In 1841, at the 
Magnetic Observatory. 
Martin’s Island. In the sandy bay S.E. of Pilot’s Hill. 
Amsterdam Island. A coral islet ; on the sand, at the landing-place. 
Saint Helena. Position of the Erebus and Terror at Sisters’ Walk. 
Jobie Island. On a limestone islet, one mile from the main island. 
Shell Rock. Volcanic rock ; on a sandy tongue projecting from it. 
Pulo Kumpal. At the landing-place on Rendezvous Island, clay-slate. 
Bouro Island. Beach in front of the battery. 
Port Carteret. The sandy landing-place on Cocoa-nut Island. 
Amboyna. On the S.W. outer curtain; position changed three times. 
Britannia Island. On coral sand at the landing-place, Victoria Bay. 
Macassar Island. Position pointed out as that of the French expedition, the Astro- 
labe and Z61ee. 
Solombo Island. At the landing-place. 
