328 



Land Magnetic Observations, 1914-20 



SOUTH AMERICA. 

 Brazil continued. 



Sao Luiz de Caccres, Matlo Grosso, 1914 continued. 



jecting 2 feet (0.6 meter) above ground, with a copper 

 tack in top. True bearings: right edge of powder 

 magazine, 200 yards (183 meters), 211 16'.7; tip of 

 lamp-post, 150 yards (137 meters), 24531'.9; cross 

 on church tower, 300 yards (274 meters), 297 44'.6; 

 tip of telegraph-pole at comer of cuartel, 200 yards 

 (183 meters), 319 43'.2. 



Sao Miguel Rapids, Para, 1915. At foot of rapids of Sao 

 Miguel, on island of same name, just below sharp point 

 of island about which deep-water channel of river 

 makes an abrupt turn to left, and about 30 yards (27 

 meters) northwest of water's edge; marked by stake 

 projecting several inches above ground. True bear- 

 ings: middle of large flat mount of Serra do Cordueira, 

 153 09'; highest visible peak, 186 24'; fiat-topped 

 peak, 272 39'; low peak, 285 24'. 



Sapucaia Island, Para, 1915. See Espinhel. 



Sobral, Ceara, 1919. At southern extremity of Praca 

 Senador Figuira, inside race-track inclosure of Sobral 

 Jockey Club, 11.05 meters southwest of northwest 

 corner and 7.65 meters southwest of southwest cor- 

 ner of watchman's house, 6.85 meters southeast of 

 nearest point of outside fence, 1.90 meters north of 

 fence along race-course, and 24 meters northeast of 

 wooden telephone-pole south of race-course; marked 

 by a brass-bound tripod stake, a hole in center mark- 

 ing exact point, left flush with ground. True bear- 

 ings: lightning-rod on factory chimney, 57 05'.6; 

 wind-gage pole in Praca Figuira, 162 13'. 0; southeast 

 corner of Alberto Amaral's house, 171 26'.0; northern 

 corner of cathedral, 263 18'.4; west spire of cathe- 

 dral, 26431'.8. 



Tapirape River, Goyaz, 1915. On high sand-bank about 

 4 kilometers north of Caraja village Tapirape, on 

 east shore of west branch of Araguaya River, and 

 about 1 kilometer south of mouth of the Tapirape 

 River. 



Timboleua, Para, 1918. About 70 meters southeast of 

 railroad station, in open space in front of church, 

 about 50 meters south of railroad track, 22.83 meters 

 from northwest and 22.34 meters from northeast cor- 

 ner of church, 8.62 meters north of base of wooden 

 cross, and 22.7 meters south of trunk of tree; marked 

 by wooden peg. True bearing: northeast corner of 

 railroad station, 107 42'2.. 



Urucurituba, Para, 1918. About 225 meters north of left 

 shore of Tapajos River, in pasture about 200 meters 

 northwest of buildings, 25.5 meters south, 25.6 meters 

 northeast and 37 meters northwest respectively of 

 three large trees. True bearing: 328 38'.5. 



Vassouras, Rio de Janeiro, 1915 and 1919. Three piers, 

 A and B as in 1913, and C in 1919 only, were occupied 

 for intercomparisons in absolute house of National 

 Observatory of Brazil about 1 mile (1.6 km.) north- 

 east of Vassouras; in 1919 outside auxiliary stations 

 F and G, in line from pier B towards corner of distant 

 house, and E, in line extended from pier B to A, were 

 also established. True bearings: center pin of Obser- 

 vatory azimuth mark from A, 14640'.7; left edge of 

 house on hill from B (1.6 km.), 174 55'.9; near cor- 

 ner of house on hill from B (1.6 km.), 175 16'.2. 



Villa Nova, Amazonas, 1918. On left bank of Tapajos 

 River, about 150 meters southwest of house in open 

 space on side of hill and 40.3 meters south of southeast 



corner post of w len shed; marked by peg. True 



bearings: rightcornerof house, under eaves, 205 59.7; 

 gable of house across river, 4 kilometers, 289 08'. '2. 



SOUTH AMERICA. 



Brazil concluded. 



Vista Alegre, Amazonas, 1914. On grass on upper bank at 

 barraca Vista Alegre, on south (right) bank of Ma- 

 deira River, about 75 yards (69 meters) northwest of 

 church, and 12 paces northwest of lone orange tree; 

 marked by tack in top of tent peg driven flush with 

 ground. True bearings: right edge of roof of house 

 across river, one mile (1.6 km.), 209 49'. 7; left edge 

 of east porch post of owner's house, 200 yards (183 

 meters), 259 11'.6; tip of cross on church, 298 29'.3. 



Xapury, Acre, 1918. Near center of west half of plaza, 62 

 paces west of band-stand, 6 paces north of path; 

 marked by a stake driven flush with ground. True 

 bearings: gable of post-office, 166 15'. 6; wireless 

 mast, 27625'.3; weather-vane on band-stand, 287 

 54'.7. 



Chile. 



Antofagasta, Antofagasta, 1917. Approximate reoccupa- 

 tion of C I. W. station of 1912, about 150 meters 

 east of railroad, and almost due east of Calle Bolivar, 

 in saddle just east of prominent point on third ridge 

 south of large wooden cross which stands on a stone 

 base, 3 meters south of summit of small knob to 

 north, and 5 meters and 6 meters respectively from 

 summits of small knobs to southeast and southwest; 

 marked by stake left just below surface of ground. 

 True bearings: chimney of east water-works, 31 04'. 0; 

 right edge of right water-tank, 31 16'.2; cross on 

 church by Plaza Colon, 121 16'. 6; large nearby 

 wooden cross, 191 ll'.l. 



Arica, Tacna, 1914, 1917. Close reoccupation of C. I. W. 

 station of 1913. On sandy plain about 1.5 kilo- 

 meters northeast of town, IIS feet (36.0 meters) south- 

 west and 120.7 feet (36.79 meters) northwest of west 

 and southwest corners respectively of cemetery wall; 

 marked by an inverted brown glass bottle buried 

 flush with ground and covered by a granite boulder 

 about 20 centimeters in diameter. True bearings: 

 flagpole on square tower in front of pest-house, 6 

 06'. 0; church spire in Arica, 83 40'. 4; south corner 

 of foundation wall, 195 17'.2; windmill in front of 

 cemetery, 31706'.S. 



Caldera, Atacama, 1917. North of main section of town, 

 near bathing beach, 30 meters west of west bath- 

 house in row of bath-houses near band-stand, about 

 250 meters west of pier and about 39.6 meters north- 

 east of vertical cliff of soft stone, 14.5 meters northeast 

 of path, and 11 meters south of high-water line; 

 marked by tent-peg driven flush with ground. True 

 bearings: light on rock in harbor, 162 35'.8; vertical 

 west face or edge of distant rock, 200 06'.S; light on 

 passenger mole, 221 16'.2; cross on church, 297 24'.3. 



Catalina, Antofagasta, 1917. About 600 meters south- 

 east of town, and about 150 meters west of hotel and 

 freight station of Longitudinal Railway, 72 paces 

 east of small railroad track, 15 meters south of top 

 of small fill formerly used for nitrate railroad, 16.4 

 meters east of a nitrate prospect hole about 2 meters 

 square and 2.5 meters deep, and 5 meters north of 

 line of south side of freight station; marked by a 

 wooden peg left slightly below surface of ground and 

 covered with small nitrate rock. True bearings: 

 center of taller of two smoke-stacks at nitrate oficina, 

 106 40'.7; west corner of engine-house, 185 35'.4; 

 south side of water-tank, 235 56'.9; northeast corner 

 of Longitudinal Railway station, 290 52'.7; pole on 

 ridge at saddle, 338 27'.0. 



Chanaral, Atacama, 1917. About 2 kilometers north- 

 northeast of main part of town on high level plain 

 between first and second football-fields east of ceme- 



