184 



Land Magnetic Observations, 1905-10 



ISLANDS, PACIFIC OCEAN. 



Fiji Islands concluded. 



Suva Vou, Viti Levu Island, 1906. About 2 miles (3 kilo- 

 meters) from Suva on north shore of Suva Harbor 

 and on a point called Suva Vou, identical with H . M. S. 

 Waterwitch station of 1896 and was found marked by 

 a concrete post standing about 18 inches (45 cm.) 

 out of ground. The post is marked with an arrow 

 and the year 1896. The lower lighthouse is in true 

 bearing 129 48'. 6. A secondary station for dip 

 observations, and designated as Suva Vou B, was 

 established by the Galilee party about 75 feet (23 

 meters) northeast of above station. 



Tilingilha Island, 1906. Southwest of hill on a cocoanut 

 plantation, on top of low bluff, about 25 feet (8 

 meters) from high-water mark and near landing-place 

 from boat passage through mangrove swamp. Ap- 

 proximately the same as H. M. S. Waterwitch station 

 of 1895. ^larked by a cement post 4.5 by 8 by 24 

 inches (12 by 20 by 60 cm.) marked on top T.M.C.I. 

 1906. 



Hawaii. 



Sisal (Honolulu Magnetic Observatory), Oahu Island, 1905, 

 1907. The observations were made on the mag- 

 netometer pier of the absolute house of the Coast and 

 Geodetic Survey magnetic observatory, located at 

 Sisal. In 1907 a tent station, A, was also occupied 

 about 40 feet (12 meters) due true north of the abso- 

 luge observatory pier, in the observatory inclosure. 

 A second tent station, B, was established about 60 feet 

 (18 meters) southwest of the absolute observatory, 

 in observatory inclosure. The various ship instru- 

 ments were tested in 1907 at several other points in 

 the observatory grounds. 



Lad RONE Islands. 



Guam, 1906. Four stations were established, two at 

 Orote Point and two at Cabras Island. The main 

 station at Orote Point is east of the Point, on the 

 south side of Apra harbor, and on a sand beach near 

 base of high land on outer edge of vegetation. 

 Marked by a cement post, set with its top somewhat 

 above surface of ground. The following true bearings 

 were determined: flagpole at Piti, 256 39'. 1; wireless 

 telegraph pole, 266 03'. 6. Observations were also 

 made at a point, designated Orote Secondary, about 

 30 feet (9 meters) east-northeast of the main station. 

 The main station on Cabras Island is on the north 

 side of Apra harbor, approximately 150 yards (140 

 meters) west of coal shed and about 30 feet (9 meters) 

 from water. The following true bearings were 

 determined: flagpole at cable station, 41 09'.4; 

 magnetic station at Orote Point, 71 07'.0. Obser- 

 vations were also made at a point, designated Cabras 

 Secondary, about 50 feet (15 meters) west of principal 

 station. 



Marquesas Islands. 



Nukahiva Island, 1907. A number of stations were 

 occupied and indicate local disturbance. Station 8 

 is on the site of the old Fort Collet, a small con- 

 spicuous rocky knoll on cast side of Tai-o-hae, or 

 Anna Maria Bay, and about 90 feet (27.5 meters) 

 above sea-level. The point is about 40 feet (12 

 meters) northwest of a trail which leads up from the 

 public trail to the harbor light, which is fixed to a 

 pole 57.8 feet (17.63 meters) distant. Marked by a 

 hole in the top of a pine post 3.5 by 5.5 by 35 inches 

 (10 by 14 by 84 cm.) set one-half its length in the 

 ground. The harbor light is in true bearing 40' 

 west of south. Station 9 is near the northwest head 

 of Tai-o-hae, or Anna Maria Bay, on land covered 

 with a dense growth of tall brush, belonging to the 

 government. This point is 27 feet (8.2 meters) 



ISLANDS, PACIFIC OCEAN. 



Marquesas Islands concluded. 



Nukahiva Island, 1907 continued. 



distant from and about 3 feet (1 meter) above high- 

 water mark. The station is marked by a hole in top 

 of a pine post 3.5 by 3.5 by 44 inches (9 by 9 by 110 

 cm.) projecting about 40 cm. above the ground. 

 Three test stations were also established at points 

 around 9; they are designated as 9i, 9^, and 9j. The 

 following true bearings were determined from 9: 

 station 8, 278 42'.3; harbor light pole, 279 07'.6; 

 northwest edge of Government House, 274 00'. 4. 

 Two additional stations were placed on the line 

 determined by station 8 and the basaltic cliff, which 

 is in true bearing 60 29'. 1 west of south from 8. 

 The first, designated as 8i, is 40 feet (12.2 meters) 

 west, and the second, 82, is 43 feet (13.1 meters) 

 east along this line from the principal station. 



Marsh.\ll Islands. 



Jalnit Island, 1906, 1907. The main station of 1906 and 

 1907 is at American Town, about one and one-fourth 

 miles (2 kilometers) south of the settlement, near the 

 high-water mark and the shore end of the old railroad 

 pier. Marked by a cement post bearing the letters 

 C.I. 1906, set with its top slightly above the surface 

 of the ground. The following true bearings were 

 determined: Company's flagpole, 204 17'. 2; hotel 

 llagstaff, 197 38'.4; beacon in lagoon, 183 31'.8. 

 Observations were also made in 1906 at a point, 

 designated as Jaluit secondary, about 30 feet (9 

 meters) to the south and in range with station and 

 Company's flagpole. Station Jaluit III of 1906 was 

 established to test local disturbance about the 

 position of swing in harbor, and is about 3 miles 

 (5 kilometers) southwest of the principal station. 

 Dip observations were made at a point. III Secondary, 

 about 75 feet (22.9 meters) east of III. In 1907 a 

 secondary station, designated Jaluit secondary 2, was 

 established at a point 57.8 feet (17.62 meters) true 

 south 17 38' west of the main station. 



Samoan Islands. 



Apia, Upolu Island, 1905, 1906, 1907. The observations 

 made by G. Heimbrod in 1906 were at the first 

 absolute house, on the spit of land called Mulinum, 

 of the Samoa Observatory of the Imperial Academy of 

 Sciences of Gottingen. The observations of 1906 

 by the officers of the Galilee were made at three points. 

 One of these was the first absolute house of the Samoa 

 Observatory. The second station, designated North 

 Pier, was in the Observatory grounds about 50 feet 

 (15 meters) north of the absolute house. The third 

 station, designated as East Pier, was in the Observa- 

 tory grounds about 50 feet (15 meters) cast of the 

 absolute house. The observations in 1907 were made 

 at two stations. The first, designated stump, was 

 near the north pier station of 1906, being about 

 10 feet (3 meters) northwest of the north pier. The 

 second, designated as West Pier, was in the Obser- 

 vatory grounds about 41 feet (12.5 meters) west from 

 west wall of new absolute house. The first absolute 

 house of the Obser\'atory was being rebuilt at the 

 time of the 1907 work and it was not possible to 

 observe in it. 



Society Islands. 



Motu Uta, Tahiti Island, 1907. Three stations were 

 occupied near southeast corner of small island called 

 Motu Uta in Papeete Harbor and designated as 

 Motu Uta, Motu Uta 1, and Motu Uta 2. They are 

 in line with flagstaff at Government Building. Motu 

 Uta is the middle point, and stations 1 and 2 are 30 



