174 



Land Magnetic Observations, 1905-10 



SOUTH AMERICA. 



CoLOM Bi A concluded . 



Puerto WiUhcs, Bolivar, 1909. About 100 yards (91 

 meters) up the river from where the steamers moor, 

 just below the temporary house of Mr. Pitt, of the 

 Puerto VVilches Railway, and about midway between 

 it and the river. 



Riohacha, Magdalena, 1909. Southwest of the town in 

 open ground on top of very slight rise about 200 yards 

 (183 meters) from the houses nearly on continuation 

 of street running at right angles to the beach (the 

 first street to the northeast from square containing 

 church). Marked by wooden peg. The following 

 true bearings were determined: cross on dome of 

 church, 132 51'. 7; top of belfry of school, 181 48'.3. 



Sa7ita Marta, Magdalena, 1909. On open plain between 

 city and semicircle of hills to north about one-third 

 mile (0.5 kilometer) past railroad and near south end 

 of a large patch of scrub in center of plain. Marked 

 by a wooden peg. The following true bearings were 

 determined: top of dome of Cathedral, 6 37'. 8; 

 right-hand edge of custom house, 63 42'. 5. 



Savanilla, Bolivar, 1908, 1909. The station of 1908 was 

 on a bank of clay and sand about 275 yards (251 

 meters) southwestward along the shore from the 

 pier and about 6 feet (2 meters) from top of bank. 

 The station of 1909 is about 60 feet (18 meters) 

 farther from the pier than that of 1908. The following 

 true bearings were determined from the station of 

 1909: lighthouse, 223 18'.2; lighthouse, 149 31'.1. 



Tumaco, Cauca, 1909. In an open grassy space on 

 property of Mrs. Dwight, on the innermost or land- 

 ward end of the island opposite Tumaco called 

 Morrito or Morro Chico. Mrs. Dwight's house is 

 distant about 250 yards (230 meters) northeast. The 

 top of church tower in Tumaco is in true bearing 

 79 26'.9. 



Ecuador. 



Bahia, Manahi, 1908. On top of narrow promontory on 

 which the lighthouse stands, about 44 paces seaward 

 of lighthouse. 



Esmeraldas, Esmeraldas, 1908. About a mile (1.6 kilo- 

 meters) southwest of town, on road leading to Tiaune, 

 at top of first steep rise in road and first from which 

 any of the town can be seen; the road is lined on both 

 sides by dense bush. Marked by a wooden peg. The 

 top of tower of Cuartel was found in true bearing 

 231 59'.2. 



Guayaquil, Guayas, 1908. Between the Cerro del Carmen 

 and the Cerro dc Santa Ana, west-southwest of the 

 military hospital on a unused path through grounds 

 of Mr. Riley, practically on ridge and 118 feet (35.0 

 meters) from west corner of board fence around 

 hospital grounds. The following true bearings were 

 determined: fiagstaff on top of Cerro dc Santa Ana, 

 277 15'. 5; center of tower of military hospital, 269 

 27'.8; lightning rod on center chimney of pumping 

 station, 331 54'.1. 



Hacienda Caucha, Esmeraldas, 1908. On left bank of 

 Esmeraldas River, below house of Sr. Tomaso Angulo, 

 owner of Hacienda Caucha, about 3 miles (S kilo- 

 meters) above the village of Mafua and about three- 

 fourths of the way up a long reach in the river just 

 above Mafua. On soft sandstone rock and marked 

 by wooden peg. 



Ibarra, Imbabura, 1908. On top of first hill to west of 

 continuation of street to left of Iglesia de San 

 Domingo, and north of and just outside the town. 

 The following true bearings were determined: left 

 tower of CoUegio Nacional, 352 38'.4; center of top 



SOUTH AMERICA. 



Ecuador continued. 



Ibarra, Imbabura, 1908 continued. 



of tower of San Domingo, 345 14'. 8; top of center 

 tower of Cathedral, 358 10'. 0; tower of church in 

 village of San Antonio, 63 57'. 2. 



Loja, Loja, 1908. At foot of mountains and just south of 

 and overlooking the city, on property belonging to 

 Sr. Jose Maria Leguerica, and known as " Pucara." 

 In the second field from Calle Bolivar, 105 feet 

 (32.0 meters) from cactus hedge southeast, 107 feet 

 (32.6 meters) from cactus hedge northeast, and is 

 marked by peg of coffeewood. The following true 

 bearings were determined: top of dome in cemetery, 

 97 09'.2; statue of Virgin on opposite slope, 143 

 or. 8; top of hospital tower, 161 32'. 7; top of large 

 tower of Iglesia de San Francisco, 167 45'.4; top of 

 tower of Las Conceptas Cathedral, 168 45'. 5; top of 

 tower of Iglesia del Carmen, 175 20'. 5. 



Manta, Manabi, 1908. Just outside the township and 

 may be best reached by going up the beach past the 

 township to first road leading into the interior; on 

 top of small rise in an inclosed lot at left side of 

 beginning of road near the stump of a small tree and 

 about 2 feet (0.6 meter) to right of line from stump to 

 hospital, about 60 paces southwest of gate in bamboo 

 fence and 11 paces east of thorn fence along roadside. 

 The outer edge of hospital bears 264 31'. 1. 



Porto Velo, Oro, 1908. At the South American Develop- 

 ment Company's mines near Zaruma, on a small knoll 

 on a ridge running southwest from the doctor's house, 

 on ground covered with thin scrub; 25 paces below 

 the first trail that crosses the ridge. Marked by a 

 wooden peg. The west edge of doctor's house is in 

 true azimuth 220 Ol'.S. 



Quito, Pichincha, 1908. East of the city, on top of a hill 

 called Ichimbia, which is also the name of the hacienda 

 on which it is situated. A road runs along top of hill 

 and station is reached by following this road 300 

 yards (274 meters) past the old farmhouse of Camilo 

 Ponse and about 200 yards (183 meters) past a grove 

 of eucalyptus trees, to a mud gateway on the east side 

 of the road. The station is 20 feet (6.1 meters) east 

 of the center of the gateway; there is a similar gateway 

 on the west side of the road. The surrounding 

 country is volcanic and there is considerable volcanic 

 ash in the soil. The center of right-hand gable end 

 of house erected by the French Commission for 

 measuring arc of meridian, on hill to southwest, was 

 found to be in true bearing 64 51'.2. 



Secondary dip observations were also made at 

 house of Mr. Soderstrom about three-fourths mile 

 (1.2 kilometers) west of station. 



Riobarnba, Chimborazo, 1908. On the small hill about 

 one-fourth mile (0.4 kilometer) north of railroad 

 station. The hill is called Cerro del Quito and is 

 reached by following the Carrera de Arozco and its 

 continuation. On top of the hill is a brick pier with 

 a wooden structure with four arms over it, probably 

 put there by French Commission measuring arc of 

 meridian. The station is 84H feet (25.8 meters) 

 southeast of this pier and 16 feet (4.9 meters) north- 

 east of northeast corner of mud wall of an old Indian 

 house. The station is on bare sandy soil and the 

 region is surrounded by extinct and active volcanoes. 

 The following true bearings were determined: top of 

 tower of Cathedral, 319 33'.1; brick pier, 143 52'; 

 cairn on top of prominent peak (Amula), 68 Ol'.l. 



Salitias, Guaymas, 1908. Near office and quarters of 

 cable staff of the Central and South American Devel- 

 opment Company on Santa Elena Point, near the 



