DEPARTMENT OF TERRESTRIAL MAGNETISM. 239 



3. South America. — After completing his work in Haiti, Observer J. W. 

 Green arrived at Maracaibo, Venezuela, on November 20, and proceeded 

 along the coast of Venezuela, reoccupying seven stations, including Caracas. 

 At Port of Spain he was joined by Observer J. T. Howard, and after work in 

 Trinidad and the British West Indies, they proceeded up the Orinoco River. 

 Owing to the low stage of water, they were unable to go beyond Ciudad 

 Bolivar and it was necessary to return to Port of Spain. They arrived at 

 Georgetown, British Guiana, on March 5, reoccupying six stations in the three 

 Guiana colonies. The party reached Para, Brazil, on April 16, whence Mr. 

 Green proceeded alone southward through eastern Brazil, reoccupying sta- 

 tions near the coast established by the Department and by the Brazilian 

 Commission. He arrived at Rio de Janeiro on June 26 and compared his 

 instruments with those of the Observatory of Vassouras. He next proceeded 

 to Buenos Aires, and after reoccupying three stations in Argentina, including 

 comparison observations at the Pilar and La Quiaca observatories, he occupied 

 repeat stations in Bolivia and Peru, and arrived at Huancayo September 1. 

 Upon completion of comparisons between his outfit and the standard instru- 

 ments of the Huancayo Magnetic Observatory, he returned to Washington 

 in September, where the comparisons of his instrument with the standard 

 Carnegie Institution of Washington instruments were completed in October. 



Mr. Howard, after leaving Mr. Green's party at Para, Brazil, organized an 

 independent expedition up the Xingu River, a southern tributary of the 

 Amazon, leaving Para on May 9, and proceeded by launch and canoe south- 

 ward to about 8° south latitude on Rio Fresco, at the edge of the great plains 

 of Central Brazil. On this expedition he occupied eight new stations, and 

 returned to Para on July 13. After establishing several new stations on the 

 island Marajo, at the mouth of the Amazon, he left about the middle of August 

 for an expedition on the Trombetas River, upon the completion of which he 

 expected to reoccupy old stations along the Amazon River westward to 

 Manaos. 



After completing his work in Cuba and Jamaica, Observer W. A. Love 

 proceeded by way of Colon to Cartagena, Colombia, thence up the Magdalena 

 River to Bogota and Honda, and thence overland to Buenaventura. This 

 expedition was made during November 3 to January 15, when Mr. Love went 

 to Belize by way of Panama and Jamaica to take up the special work in 

 Guatemala, referred to above. 



Absolute observations and continuous photographic registrations of the 

 three magnetic elements were continued throughout the year at the Huancayo 

 Magnetic Observatory (see p. 241). 



4. Islands, Atlantic Ocean. — After occupying 11 stations, supported by 

 auxiliary stations, in the island of Haiti and Dominican Republic, Observer 

 J. W. Green embarked on November 10 for Curagao, Dutch West Indies, 

 where a station was reoccupied. After work in Venezuela, he arrived at Port 

 of Spain, Trinidad, on January 15, where he was joined by Observer J. T. 

 Howard. After reoccupying station Port of Spain and others established by 

 the Department in 1905, in cooperation with the Department of Surveys of 

 Trinidad, they established new stations in other parts of the island. The 

 stations in Bridgetown, Barbados, and Kingstown, St. Vincent, were also 

 reoccupied. 



5. Islands, Pacific Ocean. — Observer D. G. Coleman left Sydney, New South 

 Wales, on November 9 to reoccupy stations established in 1914 in New 

 Caledonia, Loyalty Islands, and the New Hebrides. After reoccupying 11 

 of these stations, including Noumea and Bourail in New Caledonia, and Lord 

 Norfolk Island, he returned on January 14 to Sydney. 



